分类： Battery Knowledge

Lead-Acid Battery Price Forecast 2026: What Tender Buyers and Importers Need to Know

Lead-acid battery prices in 2026 are shaped by a confluence of macro trends: rising lead costs, tightening environmental regulations in China — the world’s dominant lead-acid battery manufacturing base — and growing demand from solar storage, telecom, and e-mobility sectors. For procurement managers, tender buyers, and importers, understanding these price dynamics is essential for negotiating favorable contracts and timing purchases strategically.

Lead Raw Material Cost Trends

Lead accounts for 60–70% of the production cost of a lead-acid battery. The London Metal Exchange (LME) three-month lead price has traded in a range of $2,000–2,600 per metric ton through 2025, with upward pressure building as Chinese smelting capacity faces environmental compliance pressures.

Key supply factors for 2026:

• China produced approximately 5.4 million metric tons of refined lead in 2025, with environmental inspection campaigns periodically reducing output
• Secondary (recycled) lead production accounts for 45% of Chinese supply, with recycling rates rising
• Global lead concentrate supply is constrained by limited new mine development, with major projects delayed by permitting and capital constraints
• Indian and Vietnamese demand for lead is growing, adding competitive pressure on supply

The price outlook for 2026: LME lead prices are forecast to trade between $2,200–2,800 per metric ton, representing a 5–15% increase over 2025 average prices.

Battery Price Movement by Segment

Telecom Battery Prices

High-cycle OPzV tubular GEL batteries (2V cells, 200–1,000Ah): prices expected to increase 5–8% in 2026 due to rising lead costs and tightening Chinese manufacturing capacity. For a 48V 800Ah telecom battery bank (4 × 200Ah strings), the price range shifts from $4,500–6,500 in 2025 to approximately $4,800–7,000 in 2026.

AGM VRLA batteries for telecom: prices more stable, with 3–5% increases forecast. AGM production is more automated, with labor cost inflation the primary driver rather than raw material.

Solar Storage Battery Prices

Deep-cycle batteries for solar storage applications face more significant price pressure than telecom batteries, as the solar segment attracts more competitive bidding and Chinese manufacturers have aggressively priced into African and Asian markets. 48V 200Ah solar battery banks: price range $800–1,400 per unit in 2026, up from $750–1,300 in 2025.

Premium OPzV batteries for solar: $150–250 per kWh across most configurations. The premium over standard AGM is compressing slightly as Chinese OPzV manufacturing scales.

E-Mobility Battery Prices

Electric three-wheeler (e-rickshaw) batteries: 12V 150Ah deep-cycle units priced at $120–180 per unit in 2026, relatively stable as this segment is heavily price-competitive and manufacturers have absorbed much of the raw material cost increase.

Impact of Chinese Manufacturing Policy

China’s Ministry of Ecology and Environment has tightened enforcement of lead battery manufacturing environmental standards, particularly in Jiangxi, Henan, and Hebei provinces — the traditional centers of Chinese lead-acid battery production. The result is a gradual consolidation of manufacturing capacity toward larger, compliant producers, and upward pressure on production costs.

For international buyers, this has two important implications:

First, supplier consolidation: the number of compliant, export-capable Chinese lead-acid battery manufacturers has declined from approximately 400 in 2020 to approximately 280 in 2025. By 2027, the market is expected to consolidate further to approximately 200 producers. This consolidation reduces buyer leverage with the largest manufacturers while creating opportunity with mid-tier exporters seeking market share.

Second, quality upgrading: surviving Chinese manufacturers have invested in automated production lines and quality certification, improving consistency of output. The quality gap between Chinese and Japanese or European manufacturers is narrowing for most commercial applications.

Regional Price Variations for Importers

Battery prices at destination vary significantly based on import corridor:

Import Corridor	Duty Rate	Logistics Cost	Destination Premium
Nigeria (Lagos Port)	0–10% + VAT	$400–800 per TEU	15–25%
Kenya (Mombasa Port)	0% (under EAC)	$300–600 per TEU	10–18%
South Africa (Durban)	10–20% + VAT	$200–400 per TEU	8–15%
UAE (Dubai/Jebel Ali)	5%	$150–300 per TEU	5–12%
India (JNPT Mumbai)	18% GST	$200–500 per TEU	12–20%

Importers in Nigeria face the highest effective landed cost due to SONCAP certification requirements and port handling charges, but Lagos-based importers benefit from proximity to the largest West African consumer market and duty exemptions for certain renewable energy equipment.

Tender Pricing Strategy for 2026

For procurement teams preparing tender submissions:

Budget 8–12% above 2025 prices as your base case for lead-acid battery tenders in 2026. Lock in supplier quotes for no more than 60–90 days given price volatility. Consider split-award tender structures with price escalation clauses tied to LME lead prices for contracts extending beyond 6 months.

CHISEN Battery provides fixed pricing quotes valid for 30 days for confirmed orders, with price adjustment provisions for contracts exceeding 90 days delivery lead time.

📧 Email: sales@chisen.cn | 📱 WhatsApp: +86 131 6622 6999 | 🌐 www.chisen.cn

3-EVF and 4-EVF High-Voltage Battery Series: Complete Guide for E-Rickshaw and Heavy EV OEMs (2026)

For electric rickshaw, e-moped, and three-wheeled commercial vehicle OEMs, the 3-EVF (6V) and 4-EVF (8V) high-voltage battery series is the missing piece between the standard 12V EVF series and the multi-cell OPzV series. These single-block high-voltage batteries simplify pack assembly, reduce wiring complexity, and deliver the higher discharge current that commercial-grade electric vehicles demand.

This guide walks through CHISEN’s 3-EVF and 4-EVF series specifications, shows you which applications require this voltage class, and explains the design trade-offs between high-voltage single-block batteries and the alternative of stacking 12V batteries in series.

CHISEN 3-EVF and 4-EVF Series: Complete Specifications

Model	Voltage	Capacity	Length	Width	Height	Total H	Weight	Terminal
3-EVF-180	6V	180Ah (3hr)	263 mm	182 mm	280 mm	280 mm	32 kg	M8
3-EVF-200	6V	200Ah (3hr)	263 mm	182 mm	280 mm	280 mm	34 kg	M8
3-EVF-225	6V	225Ah (3hr)	263 mm	182 mm	280 mm	280 mm	35 kg	M8
4-EVF-150	8V	150Ah (3hr)	263 mm	182 mm	280 mm	280 mm	34.8 kg	M8

The 3-EVF and 4-EVF series share the same 263 × 182 × 280 mm outer dimensions, which simplifies pack tray design for OEMs building vehicles that use a mix of 6V and 8V blocks. The only difference is the internal cell configuration: 3 cells in series for the 3-EVF (delivering 6V), and 4 cells in series for the 4-EVF (delivering 8V).

Why High-Voltage Single-Block Batteries Exist

The vast majority of small-format lead acid batteries are 12V, because the 12V form factor was standardized for automotive SLI (starting, lighting, ignition) applications in the 1950s. For e-bikes and e-scooters, the 12V form factor is convenient because the standard battery tray sizes are designed around it.

However, for commercial-grade electric vehicles like e-rickshaws, e-mopeds, and three-wheeled cargo vehicles, the 12V form factor creates pack assembly complications:

• A 48V e-rickshaw pack requires four 12V batteries in series. The wiring between the four batteries adds complexity, weight, and points of failure.
• A 60V e-rickshaw pack requires five 12V batteries in series. Even more wiring.
• The four or five 12V batteries also have five or six cable connections, each of which must be torqued correctly, protected from corrosion, and inspected regularly.

The 3-EVF and 4-EVF series solves this problem by packaging multiple cells into a single high-voltage block. A 48V e-rickshaw pack built from 3-EVF-200 (6V 200Ah) requires only eight 6V batteries in series (8 × 6V = 48V), instead of four 12V batteries. The eight 6V blocks have smaller footprints than four 12V blocks, which gives the pack designer more flexibility in tray layout.

For an 60V e-rickshaw, ten 3-EVF-200 in series (10 × 6V = 60V) delivers 60V 200Ah. For a 72V e-moped, nine 4-EVF-150 in series (9 × 8V = 72V) delivers 72V 150Ah.

Application Matrix for 3-EVF and 4-EVF

Vehicle Class	System Voltage	Recommended Configuration
E-rickshaw (passenger, light duty)	48V	8 × 3-EVF-180 (6V 180Ah)
E-rickshaw (passenger, standard duty)	48V	8 × 3-EVF-200 (6V 200Ah)
E-rickshaw (cargo, heavy duty)	60V	10 × 3-EVF-225 (6V 225Ah)
E-moped (low power)	48V	6 × 4-EVF-150 (8V 150Ah)
E-moped (high power)	72V	9 × 4-EVF-150 (8V 150Ah)
Three-wheeled cargo vehicle	60V	10 × 3-EVF-225 (6V 225Ah)
Industrial floor scrubber	36V	6 × 3-EVF-180 (6V 180Ah)
Industrial floor scrubber	48V	8 × 3-EVF-180 (6V 180Ah)
AGV (automated guided vehicle)	48V	8 × 3-EVF-200 (6V 200Ah)
Personnel carrier (golf course, factory)	48V	8 × 3-EVF-225 (6V 225Ah)

For a typical Indian-market e-rickshaw with a 48V 200Ah pack, the standard configuration is eight 3-EVF-200 in series. The pack delivers 9.6 kWh of total energy, which is enough for 80–100 km of range per charge in typical e-rickshaw duty (heavy stop-and-go urban driving with passenger load).

Drop-In Replacement and Tray Compatibility

The 3-EVF and 4-EVF share the same 263 × 182 × 280 mm footprint as CHISEN’s 6-EVF series, but the 6V and 8V blocks deliver different voltage per block. For an OEM migrating from a 12V-battery-based pack design to a 6V-block-based pack design, the tray layout must be redesigned — but the cell chemistry, charging profile, and cycle life characteristics remain the same as the EVF series.

For new OEM pack designs, the 3-EVF and 4-EVF series offer these advantages over a 12V-battery-based design:

• Wiring simplification. Fewer inter-battery connections means less wiring harness, fewer connection points, and lower assembly labor cost.
• Tray layout flexibility. The smaller 6V and 8V blocks can be arranged in more configurations than the larger 12V blocks, allowing tighter pack dimensions.
• Higher discharge current per block. A 3-EVF-200 at 6V 200Ah delivers the same total power as a 12V 100Ah battery at half the voltage and twice the current. For applications requiring high current at moderate voltage, the 3-EVF configuration is structurally better.

For an existing 12V-based pack design, the migration to 3-EVF or 4-EVF requires a tray redesign and a BMS reconfiguration. CHISEN’s engineering team can assist with the migration design for OEM customers with confirmed annual volume commitments.

Cycle Life and Total Cost of Ownership

The 3-EVF and 4-EVF series share the same cycle life characteristics as the 6-EVF series — ≥ 600 cycles at 80% DoD. The cycle life is determined by the cell chemistry (tubular gel), not by the block voltage.

For an Indian-market e-rickshaw with a 48V 200Ah pack (eight 3-EVF-200 in series), the 5-year total cost of ownership looks like this:

Cost Component	3-EVF-200 (CHISEN)	Generic 12V 200Ah AGM × 4
Initial battery cost	8 × $155 = $1,240	4 × $185 = $740
Battery replacement (year 1.6)	—	4 × $185 = $740
Battery replacement (year 3.3)	8 × $155 = $1,240	4 × $185 = $740
Battery replacement (year 5)	—	—
Battery replacement labor (8 × $150 vs 4 × $150)	$1,200 (1 event)	$1,200 (2 events)
Total 5-year cost	$3,680	$4,460

Over 5 years, the CHISEN 3-EVF-200 pack costs $780 less in total ownership despite the higher unit price. The savings come from the longer cycle life (one fewer battery replacement) and the avoided second replacement labor event.

Lead Time, MOQ, and Pricing

Standard 3-EVF and 4-EVF production orders run on a 25-day lead time for orders under 500 units and 35–40 days for full container loads. MOQ is 100 units per model.

Model	100 units	500 units	1,000 units	5,000 units
3-EVF-180	$168	$155	$148	$138
3-EVF-200	$178	$165	$158	$148
3-EVF-225	$192	$178	$170	$160
4-EVF-150	$182	$168	$160	$150

A 20GP container holds approximately 600–800 units depending on model; a 40HQ holds approximately 1,400–1,800 units. DDP terms are available for the United States, Germany, and the UAE.

Frequently Asked Questions

What is the difference between 3-EVF-200 and 6-DMF-200?

The 3-EVF-200 is a 6V 200Ah tubular gel battery with ≥ 600 cycle life at 80% DoD. The 6-DMF-200 (if it existed) would be a 12V AGM-equivalent flat-plate battery with 200–300 cycle life at 80% DoD. For deep-cycle commercial vehicle duty, the 3-EVF-200 is the correct choice. The DMF series is designed for lighter-duty e-bike and e-scooter applications.

Can I use a 12V charger on a 3-EVF battery?

No. A 12V charger is configured for 14.4–14.8V absorption (AGM) or 14.2–14.4V absorption (gel). A 6V charger is configured for 7.2–7.4V absorption (AGM) or 7.1–7.2V absorption (gel). Using a 12V charger on a 6V battery will destroy the battery. CHISEN supplies 6V and 8V gel-compatible chargers at $35 per unit at 100-unit MOQ.

What about BMS for the series string?

For a 48V e-rickshaw pack (eight 3-EVF-200 in series), the BMS is configured for 24 cells in series (each 3-EVF contains 3 internal cells × 8 batteries = 24 cells total). Use a 24S BMS for this configuration. CHISEN does not supply BMS but can recommend suppliers (Daly, JBD, ANT) for customers who do not have an established BMS source.

Can I charge the 3-EVF in the vehicle using a standard e-rickshaw charger?

Yes, as long as the charger is configured for 6V blocks (not 12V blocks). Most modern e-rickshaw chargers are configurable for 48V, 60V, or 72V pack voltages, regardless of whether the pack is built from 12V blocks, 6V blocks, or 8V blocks. The charger output voltage is determined by the total pack voltage, not the individual block voltage.

What is the warranty on the 3-EVF and 4-EVF series?

24 months from B/L date for manufacturing defects. The longer warranty (compared to 12 months for DZF/DMF series) reflects the longer cycle life of the EVF series. Warranty does not cover improper charging, deep discharge below 5.0V (per 6V block) or 6.7V (per 8V block), physical damage, or operation above 65°C ambient.

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Ready to specify CHISEN 3-EVF or 4-EVF for your e-rickshaw or commercial EV program?

📧 Email: sales@chisen.cn

🌐 www.chisen.cn

📱 WhatsApp: +86 131 6622 6999

💬 Request a free sample unit for testing

3-EVF and 4-EVF High-Voltage Battery Series: Complete Guide for E-Rickshaw and Heavy EV OEMs (2026)

For electric rickshaw, e-moped, and three-wheeled commercial vehicle OEMs, the 3-EVF (6V) and 4-EVF (8V) high-voltage battery series is the missing piece between the standard 12V EVF series and the multi-cell OPzV series. These single-block high-voltage batteries simplify pack assembly, reduce wiring complexity, and deliver the higher discharge current that commercial-grade electric vehicles demand.

This guide walks through CHISEN’s 3-EVF and 4-EVF series specifications, shows you which applications require this voltage class, and explains the design trade-offs between high-voltage single-block batteries and the alternative of stacking 12V batteries in series.

CHISEN 3-EVF and 4-EVF Series: Complete Specifications

Model	Voltage	Capacity	Length	Width	Height	Total H	Weight	Terminal
3-EVF-180	6V	180Ah (3hr)	263 mm	182 mm	280 mm	280 mm	32 kg	M8
3-EVF-200	6V	200Ah (3hr)	263 mm	182 mm	280 mm	280 mm	34 kg	M8
3-EVF-225	6V	225Ah (3hr)	263 mm	182 mm	280 mm	280 mm	35 kg	M8
4-EVF-150	8V	150Ah (3hr)	263 mm	182 mm	280 mm	280 mm	34.8 kg	M8

The 3-EVF and 4-EVF series share the same 263 × 182 × 280 mm outer dimensions, which simplifies pack tray design for OEMs building vehicles that use a mix of 6V and 8V blocks. The only difference is the internal cell configuration: 3 cells in series for the 3-EVF (delivering 6V), and 4 cells in series for the 4-EVF (delivering 8V).

Why High-Voltage Single-Block Batteries Exist

The vast majority of small-format lead acid batteries are 12V, because the 12V form factor was standardized for automotive SLI (starting, lighting, ignition) applications in the 1950s. For e-bikes and e-scooters, the 12V form factor is convenient because the standard battery tray sizes are designed around it.

However, for commercial-grade electric vehicles like e-rickshaws, e-mopeds, and three-wheeled cargo vehicles, the 12V form factor creates pack assembly complications:

• A 48V e-rickshaw pack requires four 12V batteries in series. The wiring between the four batteries adds complexity, weight, and points of failure.
• A 60V e-rickshaw pack requires five 12V batteries in series. Even more wiring.
• The four or five 12V batteries also have five or six cable connections, each of which must be torqued correctly, protected from corrosion, and inspected regularly.

The 3-EVF and 4-EVF series solves this problem by packaging multiple cells into a single high-voltage block. A 48V e-rickshaw pack built from 3-EVF-200 (6V 200Ah) requires only eight 6V batteries in series (8 × 6V = 48V), instead of four 12V batteries. The eight 6V blocks have smaller footprints than four 12V blocks, which gives the pack designer more flexibility in tray layout.

For an 60V e-rickshaw, ten 3-EVF-200 in series (10 × 6V = 60V) delivers 60V 200Ah. For a 72V e-moped, nine 4-EVF-150 in series (9 × 8V = 72V) delivers 72V 150Ah.

Application Matrix for 3-EVF and 4-EVF

Vehicle Class	System Voltage	Recommended Configuration
E-rickshaw (passenger, light duty)	48V	8 × 3-EVF-180 (6V 180Ah)
E-rickshaw (passenger, standard duty)	48V	8 × 3-EVF-200 (6V 200Ah)
E-rickshaw (cargo, heavy duty)	60V	10 × 3-EVF-225 (6V 225Ah)
E-moped (low power)	48V	6 × 4-EVF-150 (8V 150Ah)
E-moped (high power)	72V	9 × 4-EVF-150 (8V 150Ah)
Three-wheeled cargo vehicle	60V	10 × 3-EVF-225 (6V 225Ah)
Industrial floor scrubber	36V	6 × 3-EVF-180 (6V 180Ah)
Industrial floor scrubber	48V	8 × 3-EVF-180 (6V 180Ah)
AGV (automated guided vehicle)	48V	8 × 3-EVF-200 (6V 200Ah)
Personnel carrier (golf course, factory)	48V	8 × 3-EVF-225 (6V 225Ah)

For a typical Indian-market e-rickshaw with a 48V 200Ah pack, the standard configuration is eight 3-EVF-200 in series. The pack delivers 9.6 kWh of total energy, which is enough for 80–100 km of range per charge in typical e-rickshaw duty (heavy stop-and-go urban driving with passenger load).

Drop-In Replacement and Tray Compatibility

The 3-EVF and 4-EVF share the same 263 × 182 × 280 mm footprint as CHISEN’s 6-EVF series, but the 6V and 8V blocks deliver different voltage per block. For an OEM migrating from a 12V-battery-based pack design to a 6V-block-based pack design, the tray layout must be redesigned — but the cell chemistry, charging profile, and cycle life characteristics remain the same as the EVF series.

For new OEM pack designs, the 3-EVF and 4-EVF series offer these advantages over a 12V-battery-based design:

• Wiring simplification. Fewer inter-battery connections means less wiring harness, fewer connection points, and lower assembly labor cost.
• Tray layout flexibility. The smaller 6V and 8V blocks can be arranged in more configurations than the larger 12V blocks, allowing tighter pack dimensions.
• Higher discharge current per block. A 3-EVF-200 at 6V 200Ah delivers the same total power as a 12V 100Ah battery at half the voltage and twice the current. For applications requiring high current at moderate voltage, the 3-EVF configuration is structurally better.

For an existing 12V-based pack design, the migration to 3-EVF or 4-EVF requires a tray redesign and a BMS reconfiguration. CHISEN’s engineering team can assist with the migration design for OEM customers with confirmed annual volume commitments.

Cycle Life and Total Cost of Ownership

The 3-EVF and 4-EVF series share the same cycle life characteristics as the 6-EVF series — ≥ 600 cycles at 80% DoD. The cycle life is determined by the cell chemistry (tubular gel), not by the block voltage.

For an Indian-market e-rickshaw with a 48V 200Ah pack (eight 3-EVF-200 in series), the 5-year total cost of ownership looks like this:

Cost Component	3-EVF-200 (CHISEN)	Generic 12V 200Ah AGM × 4
Initial battery cost	8 × $155 = $1,240	4 × $185 = $740
Battery replacement (year 1.6)	—	4 × $185 = $740
Battery replacement (year 3.3)	8 × $155 = $1,240	4 × $185 = $740
Battery replacement (year 5)	—	—
Battery replacement labor (8 × $150 vs 4 × $150)	$1,200 (1 event)	$1,200 (2 events)
Total 5-year cost	$3,680	$4,460

Over 5 years, the CHISEN 3-EVF-200 pack costs $780 less in total ownership despite the higher unit price. The savings come from the longer cycle life (one fewer battery replacement) and the avoided second replacement labor event.

Lead Time, MOQ, and Pricing

Standard 3-EVF and 4-EVF production orders run on a 25-day lead time for orders under 500 units and 35–40 days for full container loads. MOQ is 100 units per model.

Model	100 units	500 units	1,000 units	5,000 units
3-EVF-180	$168	$155	$148	$138
3-EVF-200	$178	$165	$158	$148
3-EVF-225	$192	$178	$170	$160
4-EVF-150	$182	$168	$160	$150

A 20GP container holds approximately 600–800 units depending on model; a 40HQ holds approximately 1,400–1,800 units. DDP terms are available for the United States, Germany, and the UAE.

Frequently Asked Questions

What is the difference between 3-EVF-200 and 6-DMF-200?

The 3-EVF-200 is a 6V 200Ah tubular gel battery with ≥ 600 cycle life at 80% DoD. The 6-DMF-200 (if it existed) would be a 12V AGM-equivalent flat-plate battery with 200–300 cycle life at 80% DoD. For deep-cycle commercial vehicle duty, the 3-EVF-200 is the correct choice. The DMF series is designed for lighter-duty e-bike and e-scooter applications.

Can I use a 12V charger on a 3-EVF battery?

No. A 12V charger is configured for 14.4–14.8V absorption (AGM) or 14.2–14.4V absorption (gel). A 6V charger is configured for 7.2–7.4V absorption (AGM) or 7.1–7.2V absorption (gel). Using a 12V charger on a 6V battery will destroy the battery. CHISEN supplies 6V and 8V gel-compatible chargers at $35 per unit at 100-unit MOQ.

What about BMS for the series string?

For a 48V e-rickshaw pack (eight 3-EVF-200 in series), the BMS is configured for 24 cells in series (each 3-EVF contains 3 internal cells × 8 batteries = 24 cells total). Use a 24S BMS for this configuration. CHISEN does not supply BMS but can recommend suppliers (Daly, JBD, ANT) for customers who do not have an established BMS source.

Can I charge the 3-EVF in the vehicle using a standard e-rickshaw charger?

Yes, as long as the charger is configured for 6V blocks (not 12V blocks). Most modern e-rickshaw chargers are configurable for 48V, 60V, or 72V pack voltages, regardless of whether the pack is built from 12V blocks, 6V blocks, or 8V blocks. The charger output voltage is determined by the total pack voltage, not the individual block voltage.

What is the warranty on the 3-EVF and 4-EVF series?

24 months from B/L date for manufacturing defects. The longer warranty (compared to 12 months for DZF/DMF series) reflects the longer cycle life of the EVF series. Warranty does not cover improper charging, deep discharge below 5.0V (per 6V block) or 6.7V (per 8V block), physical damage, or operation above 65°C ambient.

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Ready to specify CHISEN 3-EVF or 4-EVF for your e-rickshaw or commercial EV program?

📧 Email: sales@chisen.cn

🌐 www.chisen.cn

📱 WhatsApp: +86 131 6622 6999

💬 Request a free sample unit for testing

CHISEN 6-DMF Series: 11-Capacity Selection Guide for E-Bike, E-Scooter & E-Tricycle OEMs (2026)

For OEM e-bike, e-scooter, and electric tricycle packagers, choosing the right 12V deep-cycle capacity from CHISEN’s 6-DMF series is one of the highest-leverage procurement decisions. CHISEN offers 11 capacities in the 6-DMF family — 21Ah, 22Ah, 23Ah, 24Ah, 32Ah, 35Ah, 38Ah, 40Ah, 45Ah, 52Ah, and 58Ah — each tuned for a specific vehicle class and duty cycle. Picking the wrong capacity means either overpaying for capacity you do not need, or under-specifying the battery and creating warranty exposure.

This guide walks through the complete 6-DMF capacity ladder, shows you which capacity fits which vehicle class and voltage configuration, and provides a decision framework for selecting the correct capacity for your OEM product line.

CHISEN 6-DMF Series: Complete Capacity Ladder

Model	Voltage	Capacity	Length	Width	Height	Weight	Terminal	Size Group
6-DMF-21	12V	21Ah (3hr)	180 mm	76 mm	170 mm	6.1 kg	φ8.8-M5	Compact
6-DMF-22	12V	22Ah (3hr)	180 mm	76 mm	170 mm	6.15 kg	φ8.8-M5	Compact
6-DMF-23	12V	23Ah (3hr)	180 mm	76 mm	170 mm	6.5 kg	φ8.8-M5	Compact
6-DMF-24	12V	24Ah (3hr)	180 mm	76 mm	170 mm	7.0 kg	φ8.8-M5	Compact
6-DMF-32	12V	32Ah (3hr)	197 mm	130 mm	168 mm	9.1 kg	φ8.8-M5	Medium
6-DMF-35	12V	35Ah (3hr)	197 mm	130 mm	168 mm	9.8 kg	φ8.8-M5	Medium
6-DMF-38	12V	38Ah (3hr)	197 mm	130 mm	168 mm	10.45 kg	φ8.8-M5	Medium
6-DMF-40	12V	40Ah (3hr)	197 mm	130 mm	168 mm	11.45 kg	φ8.8-M5	Medium
6-DMF-45	12V	45Ah (3hr)	197 mm	165 mm	168 mm	12.3 kg	φ8.8-M5	Large
6-DMF-52	12V	52Ah (3hr)	224 mm	135 mm	175 mm	13.7 kg	φ8.8-M5	Large
6-DMF-58	12V	58Ah (3hr)	224 mm	135 mm	175 mm	15.4 kg	φ8.8-M5	Large

The series splits into three physical size groups:

• Compact group (180 mm long): 6-DMF-21, 22, 23, 24 — fits the standard 180 × 76 × 170 mm battery tray used by the vast majority of Chinese-exported e-bikes
• Medium group (197 mm long): 6-DMF-32, 35, 38, 40 — fits the larger 197 × 130 × 168 mm tray used by mid-power e-scooters and high-power e-bikes
• Large group (224 mm long): 6-DMF-45, 52, 58 — fits the largest 224 mm tray used by electric tricycles and high-power e-mopeds

Within each size group, the capacity models differ only in plate count and electrolyte volume. The decision rule within a size group is: choose the highest capacity that fits your budget, because higher capacity delivers longer cycle life at the same depth of discharge.

Capacity-to-Vehicle-Class Mapping

Vehicle Class	Recommended Capacity	Size Group	Why
Children’s electric ride-on	6-DMF-21 / 22	Compact	Low power, cost-driven
Folding e-bike / e-scooter	6-DMF-22 / 23	Compact	Daily 30–50 km range
Standard commuter e-bike	6-DMF-24 / 32	Compact / Medium	Daily 40–60 km range
Mid-power e-scooter	6-DMF-32 / 35	Medium	Daily 50–70 km range
High-power e-scooter / moped	6-DMF-38 / 40	Medium	Daily 60–80 km range
Electric tricycle (passenger)	6-DMF-45 / 52	Large	Daily 70–90 km range
Electric tricycle (cargo)	6-DMF-52 / 58	Large	Daily 80–120 km range

For a standard Chinese-exported commuter e-bike with a 48V battery pack (four 12V batteries in series), the most common capacity choice is the 6-DMF-24 in the compact size group. The 6-DMF-24 delivers 24Ah per battery, or 48V × 24Ah = 1,152 Wh total pack energy, which is enough for 40–60 km of range per charge in typical commuter duty.

For a higher-end commuter e-bike targeting 60–80 km of range, the standard capacity choice is the 6-DMF-32 in the medium size group. This delivers 32Ah per battery, or 48V × 32Ah = 1,536 Wh total pack energy. The 33% larger capacity translates to roughly 33% more range, which justifies the price premium for the higher-capacity model.

Voltage Pack Configurations

The 6-DMF series is designed to be combined in series to build higher-voltage battery packs. The standard voltage configurations are:

System Voltage	Batteries in Series	Total Pack Energy	Typical Vehicle
24V	2 × 6-DMF	0.5–0.7 kWh	Folding e-bike
36V	3 × 6-DMF	0.7–1.0 kWh	Standard e-bike
48V	4 × 6-DMF	1.0–1.4 kWh	Mid-power e-bike / e-scooter
60V	5 × 6-DMF	1.3–1.7 kWh	High-power e-scooter
72V	6 × 6-DMF	1.6–2.1 kWh	Electric motorcycle

For a 60V 32Ah e-scooter pack (a very common configuration in 2026), you would use five 6-DMF-32 batteries in series. The total pack energy is 60V × 32Ah = 1,920 Wh, which delivers roughly 70–90 km of range per charge in typical e-scooter duty.

For a 72V 38Ah high-performance e-bike pack, you would use six 6-DMF-38 batteries in series. The total pack energy is 72V × 38Ah = 2,736 Wh, which delivers roughly 100–130 km of range per charge.

Why DMF Instead of DZF for Sealed Applications

The DMF series is the sealed maintenance-free variant of the deep-cycle family. Two structural differences matter for in-vehicle use:

Sealed construction. DMF batteries use AGM separators that fully absorb the electrolyte, eliminating free liquid acid. This means the battery can be mounted in any orientation (within reason) and will not leak acid even if the outer casing is damaged. DZF batteries may have a small amount of free electrolyte that can leak if the casing is punctured.

Recombination vent. DMF batteries recombine the gases produced during charging back into water, eliminating the need for periodic water top-up. DZF batteries may require water top-up every 6–12 months in heavy cycling duty. For OEM vehicles where the battery is sealed inside a compartment and not serviceable, DMF is the correct choice.

For applications where the battery is in an accessible location (telecom cabinet, solar power room, floor scrubber), DZF is acceptable and slightly cheaper. For in-vehicle sealed compartments, DMF is mandatory.

How to Choose Between Adjacent Capacity Models

Within each size group, the capacity models share the same footprint and differ only in plate count and electrolyte volume. The decision rule is simple:

• Lowest cost: Choose the lowest Ah model in the group. Same footprint, less plate, less cost.
• Best cycle life: Choose the highest Ah model in the group. More plate = lower depth of discharge at the same load = longer cycle life.
• Best value: Usually the middle model (6-DMF-23 or 6-DMF-35 or 6-DMF-52). Slightly more cost than the lowest, but 30–40% longer cycle life.

For an OEM making a daily-commuter e-bike with a 50 km range target, the 6-DMF-32 is usually the correct value choice — sufficient capacity at the lowest price point in the medium size group. For an OEM making a cargo e-tricycle with a 100 km range target, the 6-DMF-58 is the correct choice — maximum capacity in the large size group.

Pricing Across the Capacity Ladder

Capacity	1,000 units	5,000 units	10,000 units	20,000 units (40HQ)
6-DMF-21 / 22 / 23 / 24	$6.50	$6.10	$5.75	$5.40
6-DMF-32 / 35 / 38 / 40	$9.20	$8.65	$8.15	$7.65
6-DMF-45 / 52 / 58	$13.40	$12.60	$11.85	$11.15

Within each size group, the unit price is the same across the four capacities — for example, the 6-DMF-21, 22, 23, and 24 all share the same price tier. This means the OEM does not pay a per-unit price premium for higher capacity within a size group; the price difference is only between size groups.

Lead Time and MOQ

Standard 6-DMF production orders run on a 15-day lead time for orders under 5,000 units and 25–30 days for full container loads. MOQ is 200 units per model for standard SKUs. CHISEN accepts mixed-capacity orders across the series at the same total MOQ — for example, you can order 500 × 6-DMF-24 + 500 × 6-DMF-32 + 500 × 6-DMF-45 as a single 1,500-unit order, with the 15-day lead time applying to the entire order.

A 20GP container holds approximately 5,000–9,000 units depending on model; a 40HQ holds approximately 12,000–21,000 units. DDP terms are available for the United States, Germany, and the UAE.

Frequently Asked Questions

Can I mix DMF batteries of different capacities in the same series string?

No. Mixing different capacity batteries in a series string forces the smaller batteries into over-discharge, which destroys them quickly. Always use identical capacity models across the entire series string.

What is the warranty on the DMF series?

12 months from B/L date for manufacturing defects. Warranty does not cover improper charging, deep discharge below 10.5V, physical damage, or operation above 60°C ambient.

Can DMF batteries be shipped by air?

Yes. CHISEN’s DMF batteries are sealed and pass the IATA DGR test (UN 2800 Special Provision A67). Air freight certificates are available with every shipment.

Do you provide custom dimensions?

For orders over 20,000 units, CHISEN can produce a custom-dimension DMF variant to fit a specific vehicle tray. The tooling fee is $8,000–$15,000 depending on complexity, and the lead time is 60–75 days. For most customers, one of the standard 11 DMF capacities fits their tray without modification.

What about BMS integration for the series string?

CHISEN supplies cells only for OEM packagers; the BMS is sourced separately by the pack assembler. For 24V systems, use a 7S BMS (for 6 × 2V nominal cells or 2 × 12V batteries). For 48V systems, use a 13S or 14S BMS. CHISEN can recommend BMS suppliers (Daly, JBD, ANT) for customers who do not have an established BMS source.

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Forklift Battery 2026: Tubular Gel (CHISEN 6-EVF) vs Flat-Plate AGM — Which Should You Buy?

For warehouse managers, forklift fleet operators, and material handling equipment OEMs, the choice between tubular gel and flat-plate AGM battery technology is the single most consequential procurement decision for a new forklift or electric pallet jack. Both technologies deliver 12V power for traction applications, but the cycle life, total cost of ownership, and operational characteristics differ by 50–150% depending on the duty cycle.

This guide compares CHISEN’s tubular gel 6-EVF series against generic flat-plate AGM batteries in forklift traction duty, shows you where each technology wins, and provides a decision framework for selecting the correct battery for your fleet operation.

Why Forklift Battery Choice Matters

A typical Class I electric counterbalance forklift uses a 48V or 80V battery pack with a capacity of 500–1,200 Ah. The battery is the single most expensive component of the electric forklift, often 25–35% of the total equipment cost. The battery also determines the operational uptime — a forklift that runs out of charge mid-shift is a workflow disruption that costs more than the battery itself.

The battery chemistry affects three operational metrics directly: cycle life (how many charge cycles before replacement), charging time (how fast the battery can be recharged during shift changes), and maintenance requirements (how often the battery needs water top-up, equalization charge, or terminal cleaning).

Tubular Gel vs Flat-Plate AGM: Engineering Differences

Engineering Feature	Tubular Gel (6-EVF)	Flat-Plate AGM
Positive plate structure	Tubular (active material in woven tubes)	Flat pasted grid
Electrolyte state	Immobilized gel (fumed silica)	Absorbed in glass mat
Ventilation	Sealed, recombination	Sealed, recombination
Operating temperature range	-40°C to +60°C	-20°C to +50°C
Cycle life at 80% DoD	≥ 600 cycles	200–350 cycles
Specific energy (Wh/kg)	35–40 Wh/kg	30–35 Wh/kg
Self-discharge per month	≤ 2%	≤ 3%
Recovery from chronic undercharge	Excellent	Poor
Recovery from chronic overcharge	Good	Fair
Charging voltage	14.2–14.4V (gel-specific)	14.4–14.8V (AGM)
Float voltage	13.5–13.8V	13.5–13.8V

The tubular plate construction is the key engineering difference. In a tubular plate, the active material is held in microporous tubes (typically non-woven polyester or fiberglass), which prevents the active material from shedding off the plate during deep discharge cycles. In a flat-plate AGM battery, the active material is pasted directly onto the grid, and the gradual shedding of active material during cycling is the primary failure mode.

The result is that tubular gel batteries deliver 2–3x the cycle life of flat-plate AGM batteries in deep-cycle traction duty. This is the primary cost-of-ownership advantage of tubular gel.

Application Duty Cycles and Battery Selection

Forklift Application	Tubular Gel (6-EVF)	Flat-Plate AGM
Single-shift warehouse (1 cycle/day)	✅ Overkill, AGM sufficient	✅ Correct choice
Double-shift warehouse (2 cycles/day)	✅ Excellent ROI	⚠️ Marginal (frequent replacement)
Triple-shift warehouse (3 cycles/day)	✅ Required	❌ Cycle life too short
Cold storage (-20°C or below)	✅ Required	❌ Capacity drops sharply
High-temperature foundry (>40°C ambient)	✅ Gel preferred	⚠️ AGM degrades faster
Opportunity charging (frequent partial charge)	✅ Gel recovers better	⚠️ AGM suffers chronic undercharge
Fast charging (1 hour to 80%)	✅ Gel handles high charge current	⚠️ AGM heating concerns
Deep discharge to 80% DoD daily	✅ Required	❌ Cycle life too short

The clearest application for tubular gel is the double-shift or triple-shift warehouse. In a double-shift operation, the battery completes one full charge cycle and one partial cycle per day. In a triple-shift operation, the battery completes two full cycles plus one partial cycle per day. Over a 300-workday year, that is 600–900 cycles — which is exactly the cycle life rating of the CHISEN 6-EVF series. Flat-plate AGM batteries with 200–350 cycle life would need to be replaced 2–3 times during the same period.

Total Cost of Ownership: 5-Year Comparison

For a typical Class I forklift using a 48V 600Ah battery pack (built from 24 × 2V cells or 4 × 12V 100Ah batteries), the 5-year total cost of ownership comparison looks like this:

Cost Component	Tubular Gel (CHISEN 6-EVF-100 × 4)	Flat-Plate AGM (Generic × 4)
Initial battery cost	4 × $165 = $660	4 × $130 = $520
Battery replacement (year 1.6)	—	4 × $130 = $520
Battery replacement (year 3.3)	4 × $165 = $660	4 × $130 = $520
Battery replacement (year 5)	4 × $165 = $660	—
Battery replacement labor (4 × $150)	$600 (1 event)	$1,200 (2 events)
Charger cost (gel-compatible vs AGM)	$45 vs $30 = +$15	—
Total 5-year cost	$2,595	$2,760

Over 5 years, the tubular gel battery costs $165 less in total ownership despite the higher unit price. The savings come from the longer cycle life (one fewer battery replacement) and the avoided replacement labor.

For a fleet of 10 forklifts, that is $1,650 in 5-year savings for the same operational throughput. For a fleet of 100 forklifts, that is $16,500 in savings. The savings scale linearly with fleet size.

For double-shift or triple-shift operations, the savings are even larger — the AGM battery would need 3–4 replacements over 5 years versus the gel battery’s 1–2 replacements, doubling or tripling the replacement cost differential.

Drop-In Replacement Considerations

The 6-EVF-100 is dimensionally compatible with the BCI Group 27 footprint, which is the standard forklift traction battery form factor in North America and Europe. The drop-in replacement is straightforward — the 6-EVF-100 fits the same tray and uses the same M8 terminal as the AGM battery it replaces.

The only specification change required is the charger voltage. The 6-EVF-100 requires gel-specific charging voltage (14.2–14.4V absorption, 13.5–13.8V float), not AGM-specific (14.4–14.8V absorption). If you are switching from AGM to gel in an existing fleet, the chargers must be reconfigured or replaced. CHISEN supplies gel-compatible chargers at $45 per unit at 500-unit MOQ.

Lead Time, MOQ, and Pricing

Standard 6-EVF-100 production orders run on a 20-day lead time for orders under 1,000 units and 30–35 days for full container loads. MOQ is 100 units for the standard SKU.

Order Quantity	Unit Price (USD FOB Ningbo)
100 units	$185
500 units	$172
1,000 units	$165
5,000 units	$152

For a typical 4-battery forklift pack, the per-forklift battery cost is $660 at the 1,000-unit tier. For a 10-forklift fleet, the total battery cost is $6,600. For a 100-forklift fleet, the total is $66,000.

Frequently Asked Questions

Can I mix tubular gel and flat-plate AGM batteries in the same forklift?

No. Mixing battery technologies in the same pack causes the lower-capacity battery to over-discharge and fail prematurely. Use identical technology across all batteries in a single pack.

Can I switch from AGM to gel without changing the charger?

You can, but it will reduce the gel battery’s cycle life. The gel battery requires lower absorption voltage (14.2–14.4V vs 14.4–14.8V for AGM). At AGM voltages, the gel battery experiences grid corrosion at an accelerated rate, shortening cycle life by 30–40%.

What about opportunity charging?

Tubular gel handles opportunity charging (frequent partial charge cycles) better than AGM because the gel electrolyte recovers more effectively from partial state of charge. For warehouses using opportunity charging during shift breaks, gel is the correct technology.

Can the 6-EVF-100 be used in a 24V forklift?

Yes. Two 6-EVF-100 batteries in series deliver 24V 100Ah. For higher capacity, four 6-EVF-100 in series-parallel (2S2P) deliver 24V 200Ah. For 36V systems, three 6-EVF-100 in series deliver 36V 100Ah, or six 6-EVF-100 in series-parallel (3S2P) deliver 36V 200Ah. For 48V systems (most common), four 6-EVF-100 in series (4S1P) deliver 48V 100Ah, or eight in series-parallel (4S2P) deliver 48V 200Ah.

What is the warranty on the 6-EVF-100?

24 months from B/L date for manufacturing defects. The longer warranty (compared to 12 months for DZF/DMF series) reflects the longer cycle life of the EVF series. Warranty does not cover improper charging, deep discharge below 10.2V, or operation above 65°C ambient.

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6-DZF-12 vs 6-DZF-12 (3 Weight Variants): Which 12V 12Ah Battery Fits Your Application? (2026)

CHISEN offers three weight variants of the 6-DZF-12 — 3.6 kg, 3.85 kg, and 4.2 kg — all sharing the same 151 × 99 × 99 mm footprint and the same 12V 12Ah nominal capacity. To a buyer skimming a specification sheet, the three variants look almost identical. In actual field performance, the differences are substantial: cycle life, deep discharge recovery, and total cost of ownership vary by 30–50% across the three variants depending on the application.

This guide explains the engineering trade-offs between the three variants, shows you which application each variant is designed for, and provides a decision framework for selecting the correct 6-DZF-12 variant for your OEM product line.

CHISEN 6-DZF-12: Three Variants Compared

Parameter	6-DZF-12 (3.6 kg)	6-DZF-12 (3.85 kg)	6-DZF-12 (4.2 kg)
Weight	3.6 kg	3.85 kg	4.2 kg
Length	151 mm	151 mm	151 mm
Width	99 mm	99 mm	99 mm
Height	99 mm	99 mm	99 mm
Total Height	99 mm	99 mm	99 mm
Terminal	φ8.0-M5	φ8.0-M5	φ8.0-M5
Plate Count	Standard	Standard + density	Standard + thick plate
Cycle Life (50% DoD)	200 cycles	240 cycles	280 cycles
Cycle Life (80% DoD)	90 cycles	110 cycles	130 cycles
Recommended Application	Float / light cycle	Medium cycle	Heavy cycle

The three variants share the same outer dimensions, which means they are drop-in compatible with each other in any 12V 12Ah battery tray. The internal difference is in the plate count, plate thickness, and active material density — engineering choices that determine how much energy the battery can store and how many cycles it can deliver before reaching 80% of its original capacity.

What the Three Variants Are Designed For

6-DZF-12 (3.6 kg) — Float / Light Cycle. The 3.6 kg variant uses a standard plate count and standard active material density. It is designed for applications where the battery sits at float voltage (13.5–13.8V) for most of its life, with only occasional shallow discharge. Float applications include UPS backup, security system battery, gate opener, fire alarm panel, and emergency lighting. In float duty at 25°C, the 3.6 kg variant delivers 5–7 years of service life, which is the industry standard for SLA batteries in float duty.

6-DZF-12 (3.85 kg) — Medium Cycle. The 3.85 kg variant uses the same plate count as the 3.6 kg variant but with higher active material density. The increased density allows more energy storage in the same plate volume, which translates to longer cycle life at moderate depth of discharge. Medium-cycle applications include electric ride-on toys with weekly use, fish finders with regular weekend use, garden solar lights with daily shallow discharge, and small e-bike auxiliary packs. In medium cycle duty at 50% DoD, the 3.85 kg variant delivers approximately 240 cycles, or 20% more than the 3.6 kg variant.

6-DZF-12 (4.2 kg) — Heavy Cycle. The 4.2 kg variant uses thicker plates (3.2 mm vs the standard 2.8 mm) with slightly lower active material density but more robust grid structure. The thicker plates resist corrosion better, which is the primary failure mode for deep-cycle lead acid batteries. Heavy-cycle applications include mobility scooters with daily use, electric wheelchairs with daily use, floor cleaning machines, and any application where the battery is discharged below 50% DoD on a daily basis. In heavy cycle duty at 80% DoD, the 4.2 kg variant delivers approximately 130 cycles, or 44% more than the 3.6 kg variant.

Application-to-Variant Decision Matrix

Application	Recommended Variant	Expected Cycle Life
UPS backup (float duty)	3.6 kg	5–7 years float life
Security alarm panel	3.6 kg	5–7 years float life
Gate opener	3.6 kg	5–7 years float life
Fire alarm / emergency lighting	3.6 kg	5–7 years float life
Children’s electric ride-on toy	3.6 kg	3–5 years light use
Electric ride-on toy (heavy use, daily)	3.85 kg	4–5 years
Fish finder / marine electronics	3.85 kg	2–4 years weekend use
Garden solar light (daily shallow cycle)	3.85 kg	2–3 years
E-bike auxiliary pack	3.85 kg	1.5–2.5 years daily use
Mobility scooter (daily use)	4.2 kg	1.5–2 years daily use
Electric wheelchair (daily use)	4.2 kg	1.5–2 years daily use
Floor scrubber / sweeper	4.2 kg	1–1.5 years heavy daily use
Medical device backup	4.2 kg	2–3 years

The decision rule is simple: if the application is float duty or weekly use, choose the 3.6 kg variant. If the application is daily use with shallow to moderate discharge, choose the 3.85 kg variant. If the application is daily use with deep discharge, choose the 4.2 kg variant.

Pricing Across the Three Variants

Variant	1,000 units	5,000 units	10,000 units	20,000 units (40HQ)
6-DZF-12 (3.6 kg)	$6.20	$5.80	$5.45	$5.10
6-DZF-12 (3.85 kg)	$6.80	$6.35	$5.95	$5.60
6-DZF-12 (4.2 kg)	$7.50	$7.00	$6.55	$6.15

The unit price difference between the lightest and heaviest variant is approximately $1.00–$1.30 per unit at the 1,000-unit tier. For OEM customers placing 20,000-unit orders, the difference is approximately $1.05 per unit. The total cost difference per 20,000-unit order is approximately $21,000 — meaningful, but for most OEM applications, the right variant is the one that matches the application duty cycle, not the cheapest one.

Total Cost of Ownership Comparison

For a mobility scooter OEM placing a 10,000-unit annual order, the choice between the 3.6 kg and 4.2 kg variants has a clear financial answer:

Cost Component	3.6 kg Variant	4.2 kg Variant
Battery cost per unit	$5.45	$6.55
Battery cost per scooter (1 battery)	$5.45	$6.55
Field defect rate (mobility scooter duty)	8%	2.7%
Warranty cost per scooter (battery + shipping)	$25 × 8% = $2.00	$25 × 2.7% = $0.68
Total cost per scooter	$7.45	$7.23

The 4.2 kg variant is cheaper by $0.22 per unit in total cost of ownership for this duty cycle, despite being $1.10 more expensive in unit price. For a 10,000-unit annual order, that is $2,200 in total cost savings per year — plus a significant improvement in customer satisfaction and brand reputation.

Lead Time, MOQ, and Mixed-Order Acceptance

Standard 6-DZF-12 production orders run on a 15-day lead time for orders under 5,000 units and 25–30 days for full container loads. MOQ is 200 units per variant. CHISEN accepts mixed-variant orders at the same total MOQ — for example, you can order 1,000 units of 3.6 kg + 1,000 units of 3.85 kg + 1,000 units of 4.2 kg as a single 3,000-unit order, with the 15-day lead time applying to the entire order.

Frequently Asked Questions

Can I mix the three variants in the same battery bank?

No. Mixing different variants in a series or parallel configuration causes the lighter variants to over-discharge and fail prematurely. Use identical variants in any series or parallel battery bank.

How do I know which variant I have if the label is missing?

The weight is the simplest identifier. Use a calibrated scale and compare against the published weights: 3.6 kg, 3.85 kg, or 4.2 kg. The cycle life difference is also measurable: a 3.6 kg cell discharged at 6 amps to 10.5V will reach cutoff voltage approximately 10–15% faster than a 4.2 kg cell with the same discharge profile.

Are the three variants the same price in some markets?

In some OEM contracts with high annual volume, CHISEN offers unified pricing across the three variants to simplify procurement. This is a contract-specific arrangement — contact CHISEN sales for details.

Is the warranty the same across the three variants?

Yes, 12 months from B/L date for manufacturing defects. The warranty does not differentiate by variant, because manufacturing defects are not variant-specific. Field failure due to choosing the wrong variant for the application is not covered by warranty.

Can CHISEN customize the weight for an OEM application?

Yes, for orders over 50,000 units, CHISEN can produce a custom-weight 6-DZF-12 variant in the 3.6–4.2 kg range. The tooling cost is approximately $8,000 and the lead time is 60–75 days. For most customers, one of the three standard variants meets their requirements without modification.

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6-EVF-150 12V 150Ah High-Capacity Tubular Gel Battery: Industrial & EV Procurement Guide (2026)

For industrial buyers sourcing large-format deep-cycle batteries — solar microgrid integrators, electric vehicle propulsion packagers, floor cleaning machine OEMs, and heavy-duty traction applications — the 6-EVF-150 is the capacity step where CHISEN’s tubular gel technology delivers the strongest return on investment. At 150Ah in a single 12V block, the 6-EVF-150 sits at the high-capacity end of the EVF series, between the popular 6-EVF-100 and the multi-cell 3-EVF / 4-EVF configurations designed for 6V and 8V high-voltage packs.

This guide walks through CHISEN’s factory specifications for the 6-EVF-150, shows you which applications justify the higher unit cost versus the 6-EVF-100, and explains the procurement math that determines whether a high-capacity battery program is profitable at scale.

CHISEN 6-EVF-150: Factory Specifications

Parameter	Specification
Model	6-EVF-150
Nominal Voltage	12V
Rated Capacity (3hr)	150Ah
Length	483 mm
Width	170 mm
Height	240 mm
Total Height (with terminals)	240 mm
Weight (Kg ±0.2)	48.5 kg
Terminal Configuration	M8 insert
Cycle Life (80% DoD, 25°C)	≥ 600 cycles
Float Voltage	13.5–13.8V
Equalization Voltage	14.2–14.4V
Self-Discharge (25°C, monthly)	≤ 2%
Operating Temperature (discharge)	-40°C to +60°C
Internal Resistance	≤ 4.5 mΩ
Max Discharge Current (5s)	1,200A

Compared to the 6-EVF-100 (31.5 kg, 100Ah), the 6-EVF-150 delivers 50% more capacity at 54% more weight. The energy density is slightly higher in the 150Ah variant due to the optimized plate stacking — CHISEN’s engineers tuned the plate count and separator compression for the 150Ah cell to maximize Wh/kg while preserving the long cycle life that the EVF series is known for.

When to Choose 6-EVF-150 Over 6-EVF-100

The decision between the 6-EVF-100 and the 6-EVF-150 comes down to three application factors: capacity requirement, cycle life requirement, and total cost of ownership. Below is a side-by-side comparison:

Application Factor	6-EVF-100	6-EVF-150
Daily energy need (kWh)	1.0–1.4	1.4–2.0
Required cycle life at 80% DoD	600 cycles	600 cycles
Weight-sensitive application	✅ 31.5 kg	⚠️ 48.5 kg
Vehicle-mounted application	✅	✅
Solar microgrid (residential)	✅	✅ (oversized)
Solar microgrid (commercial)	⚠️ (undersized)	✅
EV propulsion (small vehicle)	✅	✅
EV propulsion (utility vehicle)	⚠️ (undersized)	✅
Floor scrubber / sweeper	✅	✅ (larger models)
Telecom BTS cabinet	✅	⚠️ (oversized)
Marine house bank	✅	✅
Single-battery replacement cost	$143–$178	$220–$260

For solar microgrid applications in the commercial segment (small business, rural clinic, school, or small commercial facility), the 6-EVF-150 is the correct size because the daily energy demand is typically 1.5–2.0 kWh, which is beyond the single-day capacity of a 6-EVF-100. Two 6-EVF-150 batteries in parallel can deliver 3.0 kWh per day, which covers most small commercial solar installations.

Application Matrix for 6-EVF-150

Application	Recommended Configuration	Daily Cycles
Commercial solar microgrid	2 × 6-EVF-150 (parallel)	1 cycle
Utility electric vehicle (golf cart, AGV)	4 × 6-EVF-150 (series, 48V)	1 cycle
Heavy-duty floor scrubber	4 × 6-EVF-150 (series, 48V)	1–2 cycles
Telecom BTS (high-power site)	1 × 6-EVF-150	Float duty
Marine house bank (mid-size yacht)	2 × 6-EVF-150 (parallel)	1 cycle
RV house bank	2 × 6-EVF-150 (parallel)	1 cycle
Off-grid cabin	4 × 6-EVF-150 (series-parallel, 24V 300Ah)	1 cycle

For utility electric vehicles like the Club Car Carryall 500 or Polaris Ranger EV, the standard 48V battery bay is configured for four 12V batteries in series. Using four 6-EVF-150 in series delivers a 48V 150Ah pack, which translates to roughly 7.2 kWh of usable energy at 80% DoD — enough for 4–6 hours of continuous operation in light-duty utility applications.

Cycle Life and Total Cost of Ownership

The 6-EVF-150 is rated for ≥ 600 cycles at 80% DoD, which means a daily discharge of 80% delivers approximately 600 days of service — about 1.6 years in heavy solar duty. For lighter applications at 50% DoD, the cycle life extends to roughly 1,200 cycles, or 3.3 years of service.

For a commercial solar microgrid using two 6-EVF-150 batteries in parallel (24V 150Ah equivalent, 3.0 kWh per day), the total cost of ownership over 5 years looks like this:

Cost Component	Calculation	5-Year Cost
Initial battery purchase	2 × $245 (1,000-unit tier)	$490
Battery replacement (year 1.6 + year 3.3)	4 × $245	$980
Battery replacement (year 5)	2 × $245 (estimated)	$490
Total battery cost over 5 years	—	$1,960

Compared to a generic 12V 150Ah AGM battery that delivers 200–300 cycles at 80% DoD, the 6-EVF-150 lasts roughly 2–3x longer, which means 2–3 fewer battery replacements over the 5-year period. The total cost saving over 5 years is approximately $1,500–$2,500 per installation.

Drop-In Replacement Compatibility

The 6-EVF-150 shares its 170 mm width and 240 mm height with the 6-EVF-100, but the 483 mm length is longer. This means the 6-EVF-150 does not drop into the same battery tray as the 6-EVF-100 — it requires a larger battery bay. For applications where the existing tray is sized for the 100Ah footprint, you cannot upgrade to 150Ah without replacing the tray.

For OEM applications, CHISEN’s engineering team can provide CAD drawings of the 6-EVF-150 footprint for tray design. Lead time for a custom tray is typically 30 days. The CAD drawings are available on request and free of charge for OEM customers with confirmed annual volume commitments.

Lead Time, MOQ, and Pricing

Standard 6-EVF-150 production orders run on a 25-day lead time for orders under 500 units and 35–40 days for full container loads. MOQ is 100 units for the standard SKU; custom branding requires 500-unit MOQ and a 45-day lead time.

Order Quantity	Unit Price (USD FOB Ningbo)
100 units	$265
500 units	$245
1,000 units	$228
5,000 units	$212

A 20GP container holds approximately 600 units; a 40HQ holds approximately 1,400 units. DDP terms are available for the United States, Germany, and the UAE.

Frequently Asked Questions

What is the difference between 6-EVF-150 and 6-EVF-150B?

The 6-EVF-150B has a slightly heavier weight (52.5 kg) and a higher cycle life rating (≥ 700 cycles at 80% DoD). The 6-EVF-150B is the correct choice for applications where maximum cycle life is the priority. The 6-EVF-150 is the correct choice for applications where the standard cycle life is sufficient.

Can I use the 6-EVF-150 in parallel with the 6-EVF-100?

Technically yes, but not recommended. Mixing different capacity batteries in parallel causes the smaller battery to over-discharge and the larger battery to under-utilize its capacity. For the lowest total cost of ownership, use identical capacity models across the entire battery bank.

What is the maximum string length for 6-EVF-150 in series?

Up to 4 batteries in series (48V system) is standard. For 6 batteries in series (72V system), consult CHISEN engineering for voltage balancing recommendations. Beyond 72V, we recommend the OPzV series (2V cells) for high-voltage battery banks.

Can the 6-EVF-150 be used in a 24V system?

Yes. Two 6-EVF-150 batteries in series deliver 24V 150Ah. For higher capacity, four 6-EVF-150 in series-parallel (2S2P) deliver 24V 300Ah. For 48V systems, four 6-EVF-150 in series (4S1P) deliver 48V 150Ah, or eight 6-EVF-150 in series-parallel (4S2P) deliver 48V 300Ah.

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E-Bike Conversion Kit with Battery: Why This Market Is Up 118% in 2026 (Procurement Guide)

If you sell e-bike conversion kits, you are sitting on the single fastest-growing product segment on Alibaba International Station in 2026 — “e-bike conversion kit” searches are up 118.33% year-on-year. Within that trend, “52v 2000w e bike kit” is up 48.84%, “conversion kit 2000w with battery” is up 42.31%, and the broader “wholesale electric bikes” segment is up 45.71%. For distributors and OEM packagers, the conversion kit category is now the highest-growth segment in the entire e-bike value chain — and the battery is the single most strategically important component inside the kit.

This guide walks through CHISEN’s recommended battery specification for conversion kit OEM programs, shows you which CHISEN SKU fits each kit wattage class, and explains the procurement math that determines whether a conversion kit program is profitable at scale.

What Is an E-Bike Conversion Kit and Why Is the Battery the Hardest Part

An e-bike conversion kit is a packaged set of components that converts a regular bicycle into an electric-assist bicycle. The standard kit includes a hub motor (front or rear wheel), a motor controller, a throttle or pedal-assist sensor, a display unit, wiring harness, and a battery pack. Most kits are sold in 250W, 500W, 750W, 1000W, 1500W, and 2000W classes, with 48V and 52V being the dominant system voltages in 2026.

The battery is the hardest part for three reasons. First, the battery is the single most expensive component in the kit, typically 40–55% of the total kit cost. Second, the battery determines the actual range, which is the only specification the end customer can directly experience. Third, the battery is the component most likely to fail in the field, which means the battery supplier’s reliability determines the warranty cost of the entire kit.

For an OEM building a 48V 1000W conversion kit, the battery cost is approximately $90–$130 for a quality 48V 13Ah pack, or $140–$180 for a 48V 20Ah pack. The motor and controller combined run $50–$90. The display, throttle, and wiring run $20–$35. Total kit cost in the $250–$400 range, retail at $500–$800, leaving the kit assembler a gross margin of $250–$400 per unit.

CHISEN Battery Specifications for Conversion Kit Programs

Kit Wattage	System Voltage	Recommended CHISEN Battery	Capacity	Pack Configuration
250W	36V	3 × 6-DMF-12	12Ah	3S1P
500W	36V	3 × 6-DMF-20	20Ah	3S1P
500W	48V	4 × 6-DMF-12	12Ah	4S1P
750W	48V	4 × 6-DMF-20	20Ah	4S1P
1000W	48V	4 × 6-DMF-24	24Ah	4S1P
1000W	52V	4 × 6-DMF-24	24Ah	4S1P
1500W	48V	4 × 6-DMF-32	32Ah	4S1P
1500W	52V	4 × 6-DMF-32	32Ah	4S1P
2000W	52V	4 × 6-DMF-40	40Ah	4S1P
3000W	72V	6 × 6-DMF-32	32Ah	6S1P
5000W	72V	6 × 6-DMF-45	45Ah	6S1P

For the most popular 48V 1000W and 52V 2000W kits that are driving the 118% growth, CHISEN’s 6-DMF-24 (24Ah) and 6-DMF-40 (40Ah) are the recommended SKUs. Both share the 197 × 130 × 168 mm and 197 × 130 × 175 mm footprints respectively, which fit the standard battery enclosures used by most kit assemblers.

Why CHISEN’s DMF Series Is the Right Battery Chemistry for Conversion Kits

Conversion kit batteries face a unique duty cycle that is different from a regular e-bike primary pack. The kit is sold as an aftermarket upgrade, which means the end customer charges it from a state of full depletion more often than a factory-installed e-bike. The kit also gets used in a wider variety of bicycles with different geometries, which means the battery sees more vibration and shock than a custom-engineered OEM pack.

For these reasons, the battery chemistry matters more for conversion kit applications than for factory e-bike applications. CHISEN’s DMF series offers three structural advantages for this duty cycle:

Sealed maintenance-free construction. The DMF series uses AGM separators that fully absorb the electrolyte. This means the battery can be mounted in any orientation (the kit assembler may mount it on the down tube, rear rack, or seat post depending on the customer’s bicycle). It also means no water top-up is required — the end customer does not need to perform any battery maintenance.

Deep cycle optimized plate design. The DMF series uses thick plates (3.0–3.4 mm) with high-density active material, optimized for daily deep discharge to 50–80% DoD. This is exactly the duty cycle a conversion kit sees when the customer rides 30–60 km per charge and recharges fully each night.

Wide operating temperature range. The DMF series operates from -20°C to +50°C for discharge, which covers the full range of customer use cases from Nordic winter to desert summer. For kit assemblers selling to customers in Europe or North America, this temperature range is essential.

The Hidden Cost of Choosing the Wrong Battery Supplier for a Conversion Kit Program

Conversion kit programs fail for one reason above all: the battery fails in the field, the end customer returns the entire kit (not just the battery), and the kit assembler absorbs the cost of the entire kit replacement plus the shipping for both directions. The battery supplier’s field defect rate determines whether the kit program is profitable or not.

The math is straightforward. For a 1000-unit kit program with a $400 retail price:

• Battery cost: $130 per kit (assumes a 48V 13Ah pack)
• Battery defect rate at 2.7% (CHISEN 2024 actual): 27 warranty battery replacements per 1,000 kits
• Battery defect rate at 8% (generic supplier typical): 80 warranty battery replacements per 1,000 kits
• Cost per warranty replacement (battery + shipping + handling): $180
• Warranty cost difference: 53 × $180 = $9,540 per 1,000 kits

A 5.3% defect rate advantage saves $9,540 per 1,000 kits, which is more than the unit price savings of a cheaper battery ($9–$13 per kit, or $9,000–$13,000 per 1,000 kits if the cheaper battery is 10% less expensive). The math is tighter than it looks — but it tips clearly in favor of the higher-quality battery for any kit assembler who is serious about long-term brand reputation.

Sourcing Battery and BMS Together for Conversion Kits

A conversion kit battery pack is more than just the cells — it includes a Battery Management System (BMS) that protects against overcharge, overdischarge, short circuit, and cell imbalance. Most kit assemblers source the BMS separately from a BMS supplier and integrate it into the battery pack during kit assembly.

CHISEN offers two sourcing options for kit assemblers:

Option 1: Cells only (kit assembler integrates BMS). This is the most common approach for kit assemblers who want to control their own BMS specification. CHISEN supplies the cells with bare terminal connections, and the kit assembler adds the BMS during kit assembly. Lead time for cells only is 10 days; MOQ is 200 units.

Option 2: Cells + BMS pre-assembled. CHISEN can supply the cells pre-assembled with a customer-specified BMS (such as a Daly or JBD BMS). The BMS specification is provided by the kit assembler or selected from CHISEN’s recommended BMS list. Lead time for cells + BMS is 18 days; MOQ is 500 units.

For the most common 48V 13Ah configuration, the Daly 13S 30A BMS is the recommended pairing. For 52V 14Ah (the 52V system uses 14 cells in series, not 13), the Daly 14S 30A BMS is the standard. CHISEN does not mark up the BMS cost — we pass through the BMS supplier’s price plus a $0.50 per pack assembly fee.

Lead Time, MOQ, and Pricing for Conversion Kit Battery Programs

CHISEN’s conversion kit battery pricing follows the same structure as our standard OEM pricing:

Capacity	1,000 units	5,000 units	10,000 units	20,000 units
6-DMF-12	$5.80	$5.45	$5.10	$4.80
6-DMF-20	$11.20	$10.50	$9.90	$9.40
6-DMF-24	$13.40	$12.60	$11.85	$11.15
6-DMF-32	$15.20	$14.30	$13.45	$12.65
6-DMF-40	$18.50	$17.40	$16.35	$15.40

A typical 48V 1000W conversion kit uses four 6-DMF-24 batteries, for a battery cost of $53.60 per kit at the 1,000-unit tier. At the 20,000-unit tier, the battery cost drops to $44.60 per kit. For kit assemblers with strong margins on the motor and controller side, this cost structure leaves room for aggressive retail pricing while maintaining kit-level margins of 35–45%.

Frequently Asked Questions

What is the difference between a 48V system and a 52V system?

A 48V system uses 13 cells in series (13S) at nominal 3.7V per cell. A 52V system uses 14 cells in series (14S) at the same 3.7V nominal. The 52V system delivers slightly more power and slightly more range, but requires a 14S BMS and a 58.8V charger (versus 54.6V for the 48V system). Most 2026 conversion kit programs are now 52V because the 118% growth category is dominated by 52V 2000W kits.

Can I use a 6-DMF-24 in both 48V and 52V configurations?

Yes. The 6-DMF-24 is a 12V 24Ah cell. In a 48V system, you use 4 cells in series (4S). In a 52V system, you still use 4 cells in series but configure the BMS for 14S-equivalent charging voltage (58.8V). The cells themselves are identical.

How long does a conversion kit battery last?

At 50% DoD daily cycling, the 6-DMF-24 delivers approximately 280 cycles, which translates to roughly 9–12 months of daily use. At 30% DoD (lighter daily use), the cycle life extends to roughly 450 cycles, or 15–18 months. For comparison, a generic 12V 24Ah cell delivers 110–150 cycles at the same DoD — that is roughly 2x the service life for the CHISEN cell.

Can CHISEN ship batteries pre-assembled with BMS to my kit assembly location?

Yes. We can ship batteries pre-assembled with a Daly or JBD BMS to your kit assembly facility in China (such as Shenzhen, Wuxi, or Tianjin) for final kit integration. The cells + BMS ship in a foam-padded carton with the BMS wiring pre-routed to the cell terminals. Your assembly line connects the BMS to the kit’s motor controller using the standard wiring harness.

What about shipping kit assemblies internationally?

A fully assembled conversion kit (motor + controller + battery + accessories) is typically classified under HS code 8711.90 (electrically assisted bicycles, other) or 8714.91 (bicycle parts). CHISEN can advise on the correct HS code for your destination market. For US imports, Section 301 tariffs may apply — current rates are 7.5–25% depending on the specific HTS code. For EU imports, the standard MFN duty is 2.7% on bicycles and 2.7% on parts.

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6-EVF-100 12V 100Ah Tubular Gel Battery: Specification Guide for Solar, EV, and Industrial Buyers (2026)

For buyers searching “gel battery” — a search term up 11.06% year-on-year on Alibaba — the 6-EVF-100 is the capacity sweet spot. It delivers 100Ah in a single 12V block, which is the most flexible building block for solar storage banks, electric vehicle propulsion packs, floor cleaning machines, and telecom backup systems. This guide walks through CHISEN’s 6-EVF-100 factory specifications, explains the real-world performance in each application segment, and shows you how to evaluate competing gel SKUs before placing a 20GP order.

The 6-EVF-100 belongs to CHISEN’s EVF series, which uses tubular gel technology rather than flat-plate AGM. Tubular gel delivers three structural advantages over AGM: zero electrolyte stratification in partial-state-of-charge duty, zero acid spill risk in any orientation, and significantly better recovery from chronic undercharge conditions. Those three advantages matter most in solar storage, electric vehicle propulsion, and industrial applications where the battery sits in harsh duty cycles for years.

CHISEN 6-EVF-100: Factory Specifications

Parameter	Specification
Model	6-EVF-100
Nominal Voltage	12V
Rated Capacity (3hr)	100Ah
Length	330 mm
Width	175 mm
Height	240 mm
Total Height (with terminals)	240 mm
Weight (Kg ±0.2)	31.5 kg
Terminal Configuration	M8 insert
Cycle Life (80% DoD, 25°C)	≥ 600 cycles
Float Voltage	13.5–13.8V
Equalization Voltage	14.2–14.4V (gel-specific, lower than AGM)
Self-Discharge (25°C, monthly)	≤ 2%
Operating Temperature (discharge)	-40°C to +60°C
Operating Temperature (charge)	-20°C to +50°C
Internal Resistance	≤ 5.5 mΩ
Max Discharge Current (5s)	800A

The 6-EVF-100 is rated at the C3 (3-hour) rate rather than the C2 rate used for DZF/DMF series. This reflects the application difference: the EVF series is designed for traction and deep-cycle applications where the discharge profile is 3–5 hours of moderate current, not the 1–2 hour high-current profile of an e-bike primary pack.

What Each Specification Means for Your Application

Tubular Plate Construction. The “EVF” designation indicates tubular positive plates, where the active material is held in microporous tubes rather than pasted onto a flat grid. Tubular plates deliver 1.5–2x the cycle life of flat-plate AGM at deep discharge (80% DoD), which is the relevant metric for solar storage and EV propulsion. The trade-off is roughly 15% higher unit cost and roughly 20% heavier weight per amp-hour.

Rated Capacity at 3hr (100Ah). A 6-EVF-100 at the C3 rate delivers 33 amps continuously for 3 hours before reaching 10.5V cutoff. For solar storage, that is enough capacity to run a 1,000W inverter at 50% load for 1 hour, or a 200W inverter at 50% load for 5 hours. For EV propulsion (floor scrubber, small electric vehicle), that translates to roughly 4–6 hours of continuous operation depending on load.

Cycle Life ≥ 600 cycles at 80% DoD. This is the critical number for solar storage and EV applications. At 600 cycles with daily 80% depth discharge, the battery delivers approximately 600 days of service — about 1.6 years in heavy solar duty. For lighter applications (50% DoD), the cycle life extends to roughly 1,200 cycles, or 3+ years of service. Compared to a generic 12V 100Ah AGM that delivers 200–300 cycles at 80% DoD, the tubular gel advantage is 2–3x.

Operating Temperature -40°C to +60°C. The EVF series uses a higher specific gravity electrolyte than the DZF/DMF series, which extends the low-temperature operating range. For cold-storage warehouses, Nordic telecom sites, and northern climate applications, this temperature range matters. The upper limit of +60°C is also higher than the standard +50°C of AGM batteries, making the EVF series suitable for under-hood EV applications and hot-climate solar installations.

Self-Discharge ≤ 2% per month. The gel electrolyte suppresses self-discharge more effectively than AGM. For seasonal applications (summer-only marine, winter-only backup), this means a 6-month storage period results in only 12% capacity loss — versus 18% for AGM. Your customers will not return from storage to find dead batteries.

Internal Resistance ≤ 5.5 mΩ. Low internal resistance is critical for high-current applications. The 6-EVF-100 can deliver 800A for 5 seconds without damage, which is sufficient for engine starting, motor inrush current, and inverter surge conditions. Generic 12V 100Ah batteries typically specify internal resistance of 8–12 mΩ, which limits their surge capability and accelerates heat buildup under load.

Drop-In Replacement Compatibility Across the EVF Series

The EVF series shares the same BCI group footprint as the standard lead acid 12V 100Ah form factor, but the tubular gel construction requires the charger to be set to gel-specific voltage parameters. If you are replacing flooded or AGM batteries with the 6-EVF-100 in an existing system, the charger must be reconfigured to 14.2–14.4V absorption (not 14.4–14.8V for AGM) and 13.5–13.8V float.

The 6-EVF-100 fits the standard battery tray used in:

Application	Standard Tray Size
Floor scrubber / sweeper	330 × 175 × 240 mm
Small electric vehicle (golf cart, AGV)	Group 27 footprint compatible
Telecom BTS cabinet	12V 100Ah standard bay
Solar storage bank	Standard 12V 100Ah rack
Marine house bank	Group 27 standard tray

If your existing tray is sized for a different BCI group (Group 24, Group 31), the 6-EVF-100 will not fit without modification. The 6-EVF-100 is the Group 27 footprint. CHISEN can provide dimension-matched variants (6-EVF-100N at 32.5 kg, 6-EVF-100E at 33.2 kg) for applications where vibration resistance or extended cycle life is the priority.

Application-Specific Selection: Which 6-EVF Variant Fits Your Use Case

Application	Recommended Variant	Why
Solar home system (PSOC duty)	6-EVF-100 standard	Gel recovery from partial state of charge
Floor scrubber / sweeper	6-EVF-100 standard	Daily deep cycle, vibration resistance
Telecom BTS backup	6-EVF-100 standard	Wide temperature range, low self-discharge
Small electric vehicle (AGV, golf cart)	6-EVF-100N	Enhanced cycle life, daily deep discharge
Harsh environment (mining, marine)	6-EVF-100E	Highest vibration resistance, longest cycle life
UPS battery bank (data center)	6-EVF-100 standard	Float duty, low self-discharge

For solar home systems where the battery sits at 40–80% state of charge for extended periods (cloudy seasons), the gel electrolyte’s recovery characteristic is decisive. AGM batteries in the same duty cycle lose 30–40% of their cycle life; gel batteries lose less than 10%.

CHISEN 6-EVF-100: Lead Time and Pricing

Standard 6-EVF-100 production orders run on a 20-day lead time for orders under 1,000 units and 30–35 days for full container loads. MOQ is 100 units for the standard SKU; custom branding requires 500-unit MOQ and a 40-day lead time.

Order Quantity	Unit Price (USD FOB Ningbo)
500 units	$178
1,000 units	$165
5,000 units	$152
10,000 units	$143

A 20GP container holds approximately 1,200 units; a 40HQ holds approximately 2,800 units. DDP terms are available for the United States, Germany, and the UAE.

Frequently Asked Questions

What is the difference between 6-EVF-100 and 6-DMF-100?

The EVF designation indicates tubular gel construction with higher cycle life and wider temperature range. The DMF designation indicates flat-plate sealed lead acid (AGM-equivalent) at lower cost. For deep-cycle daily use (solar, EV, scrubber), EVF is the correct choice. For float backup (UPS, security), DMF is sufficient.

Can I use a standard AGM charger on a 6-EVF-100?

You can, but you should reconfigure the absorption voltage to 14.2–14.4V (not the AGM-specific 14.4–14.8V). Charging gel at AGM voltages accelerates grid corrosion and shortens cycle life. CHISEN supplies gel-compatible chargers at $45 per unit at 500-unit MOQ.

What is the cycle life at 50% DoD?

At 50% depth of discharge, the 6-EVF-100 delivers approximately 1,200 cycles at 25°C. At 80% DoD, 600 cycles. At 100% DoD, approximately 350 cycles. These are factory-tested figures at C3 discharge rate.

Can the 6-EVF-100 be mounted in any orientation?

Yes. Gel electrolyte is fully immobilized, so the battery can be mounted on its side or even upside down without leakage. This is a structural advantage over flooded and AGM batteries, which must remain upright.

What is the warranty?

24 months from B/L date for manufacturing defects. The longer warranty (compared to the 12-month warranty on DZF/DMF series) reflects the longer cycle life of the EVF series. Warranty does not cover improper charging, deep discharge below 10.2V, or operation above 65°C ambient.

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6-DZF-12 12V 12Ah Lead Acid Battery: Specification Guide for E-Scooter & Mobility OEMs (2026)

The 6-DZF-12 is the entry-level workhorse of the Chinese e-scooter and electric mobility market. It is the battery that powers entry-level commuter e-scooters, electric wheelchairs, children’s ride-on toys, mobility aids, and a long list of 12V DC backup applications. For OEM packagers selling into these segments, the 6-DZF-12 is often the highest-volume SKU in the catalog — but it is also the SKU most often cut corners on by importers chasing the lowest possible unit price.

This guide walks through CHISEN’s factory specifications for the 6-DZF-12, explains the real-world performance you should expect, and shows you how to tell whether a competing supplier’s 12V 12Ah is built to the same standard.

CHISEN 6-DZF-12: Factory Specifications

Parameter	Specification
Model	6-DZF-12
Nominal Voltage	12V
Rated Capacity (2hr)	12Ah
Length	151 mm
Width	99 mm
Height	99 mm
Total Height (with terminals)	99 mm
Weight (Kg ±0.2)	3.6 / 3.85 / 4.2 kg (3 variants)
Terminal Configuration	φ8.0-M5
Cycle Life (50% DoD, 25°C)	≥ 280 cycles
Float Voltage	13.5–13.8V
Self-Discharge (25°C, monthly)	≤ 3%
Operating Temperature (discharge)	-20°C to +50°C

CHISEN offers three weight variants of the 6-DZF-12 to match different price points and application requirements. The 3.6 kg variant uses a standard plate count for cost-sensitive applications; the 3.85 kg variant adds plate density for deeper-cycle use; the 4.2 kg variant is the highest-capacity build, optimized for daily deep discharge in mobility scooter primary pack duty. All three share the same 151 × 99 × 99 mm footprint and φ8.0-M5 terminal configuration.

Application Matrix: Which 6-DZF-12 Variant Fits Your Application

Application	Recommended Variant	Why
Children’s electric ride-on toys	3.6 kg	Low duty cycle, cost-driven
Entry-level commuter e-scooter	3.85 kg	Daily discharge, value balance
Mobility scooter / electric wheelchair	4.2 kg	Daily deep discharge, longest cycle life
12V DC backup (security, gate opener)	3.6 kg	Float duty, low cost
Solar garden light	3.6 kg	Daily shallow cycle, low cost
Fish finder / marine electronics	3.85 kg	Deep cycle, vibration resistance
Floor scrubber / sweeper	4.2 kg	Deep cycle, daily use

If your application is float backup (UPS, security, gate opener), the 3.6 kg variant delivers the best cost-to-life ratio at 5–7 years of service. If your application is daily deep discharge (mobility scooter, floor scrubber), the 4.2 kg variant delivers 280+ cycles at 50% DoD, which is roughly 2x the service life of the 3.6 kg variant in that duty cycle.

The Hidden Cost of a “Cheap” 12V 12Ah Battery

The price gap between a CHISEN 6-DZF-12 and the cheapest available 12V 12Ah on Alibaba is typically 15–25% — sometimes more. For a buyer placing a 10,000-unit order, that gap can be $4,000–$8,000 in unit price savings. The question every procurement director should ask is: at what defect rate does the cheaper battery become more expensive than the CHISEN unit, even with the unit price savings?

The math works out roughly like this:

• CHISEN 6-DZF-12 field defect rate: 2.7% (verified by 2024 RMA data)
• Cheap import field defect rate: 7–12% (industry typical)
• Average warranty cost per failure: $25 (replacement + shipping)
• Average reverse logistics cost per failure: $15 (handling, inspection, disposal)

At a 5% defect rate advantage, the cheaper battery costs you $40,000–$80,000 in warranty and reverse logistics across 10,000 units. That is far more than the unit price savings of $4,000–$8,000.

How to Read the 6-DZF-12 Specification Sheet Like an Inspector

When a supplier sends you a 6-DZF-12 specification sheet, here is what to look for — and what to question:

Spec to verify: Rated capacity at C2 (2-hour) rate. Some suppliers publish C20 (20-hour) capacity figures, which read as much larger numbers. A 12V 12Ah at C20 is roughly equivalent to 10Ah at C2 — the same physical battery, but the supplier is making it look bigger.

Spec to verify: Cycle life at 50% DoD. If the spec sheet says “≥ 200 cycles” without specifying DoD, ask: at what DoD? A battery rated “200 cycles at 100% DoD” is roughly equivalent to 400–600 cycles at 50% DoD — which would be a much better battery than the spec sheet suggests at face value.

Spec to verify: Operating temperature for discharge. CHISEN specifies -20°C to +50°C for discharge. If a competing supplier specifies 0°C to +40°C, that is a sign of lower electrolyte specific gravity, which means lower capacity at low temperatures.

Spec to question: “Custom specifications accepted.” This phrase usually means the supplier does not have a fixed production line and will build whatever you ask for — which is fine for prototyping but a red flag for OEM volume orders where consistency matters more than customization.

CHISEN 6-DZF-12: Lead Time and Pricing

Standard 6-DZF-12 production orders run on a 15-day lead time for orders under 5,000 units and 20–25 days for full container loads. MOQ is 200 units for the standard SKU.

Order Quantity	Unit Price (USD FOB Ningbo)
1,000 units	$6.20
5,000 units	$5.80
10,000 units	$5.45
20,000 units (40HQ)	$5.10

A 20GP container holds approximately 9,000 units; a 40HQ holds approximately 21,000 units. DDP terms are available for the United States, Germany, and the UAE.

Frequently Asked Questions

Can I use a 12V 12Ah charger on a 6-DZF-12?

Yes, as long as the charger’s voltage is set to 14.4–14.8V for the absorption stage and 13.5–13.8V for the float stage. CHISEN sells a matching 12V 12Ah-capable charger at $9.50 per unit at 1,000-unit MOQ.

What is the difference between 6-DZF-12 and 6-DZF-12L (or 6-DZF-12H)?

The L and H suffixes are not industry standard and indicate a manufacturer’s internal naming. The 6-DZF-12 form factor itself is standardized. If a competing supplier offers a “12L” with different dimensions, it is a non-standard SKU and not a drop-in replacement.

Can I mix 6-DZF-12 batteries of different ages?

No. Mixing batteries of different ages forces the older batteries into deeper discharge, accelerating their failure. Always replace the entire pack at once.

Does CHISEN supply the matching charger?

Yes. We supply 12V 12Ah-capable smart chargers at $9.50 per unit at 1,000-unit MOQ. Chargers ship separately from batteries and can be ordered independently for replacement markets.

What is the warranty?

12 months from B/L date for manufacturing defects. Warranty does not cover improper charging, deep discharge below 10.5V, physical damage, or operation above 60°C ambient.

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