6-EVF-150 12V150Ah AGM Battery: Published Specs, Parallel String Sizing and EVF Range Comparison

Answer First

The 6-EVF-150 12V150Ah is a 12 V, 150 amp-hour sealed AGM VRLA block rated at the 3-hour rate to 1.75 V per cell, with a published weight of 48.5 kg, a footprint of 483 × 170 × 240 mm, a 30.0 A maximum charging current, float operation at 13.5 V and equalising at 14.1 V — and it is the correct block when a telecom power cabinet, an emergency supply or a solar-reserve branch needs roughly 1.8 kWh of stored energy per unit with no watering, no hydrogen venting and no on-site operator.

Because it is sealed and maintenance-free, it is also the block that gets specified with the least thought. Two 6-EVF-150 units in parallel give a 24 V, 300 Ah bank at 3,600 Wh and 97.0 kg (Arithmetic); that arithmetic, the 30.0 A charging limit and the ambient temperature the cabinet actually sees decide whether the installation works, long before the chemistry does.

Full published data for this block is on the 6-EVF-150 12V150Ah model page, and the wider sealed AGM range sits under AGM batteries.

Key Takeaways

• Capacity: 150 Ah at the 3-hour rate (C3) to 1.75 V/cell, and 1,800 Wh nominal per block (Datasheet / Arithmetic).
• Charging setpoints: float 13.5 V (2.25 V/cell), equalising 14.1 V, with a 30.0 A maximum charging current (Model page).
• Mechanical: 483 × 170 × 240 mm, 48.5 kg, φ20-M8 terminal (Model page).
• Cycle life: 350–600 cycles at 50–80 % depth of discharge (Model page) — this is a float-first block, not a traction battery.
• String arithmetic: two blocks in parallel give 24 V, 300 Ah, 3,600 Wh and 97.0 kg; the same energy in 12 V single blocks needs four units at 48.5 kg each (Arithmetic).

§1 — 6-EVF-150 12V150Ah Published Specifications

Figures marked Model page come from the published English product page; figures marked Arithmetic are derived from published values and show the calculation. Values marked Datasheet in other CHISEN documentation for this block are consistent with the rows above.

§2 — The Pain: Where 12V 150Ah Projects Go Wrong

The most common error is treating a sealed block as though it can absorb any charging regime. The 6-EVF-150 has a published maximum charging current of 30.0 A (Model page). Two blocks in parallel therefore accept 60.0 A of charge (2 × 30.0 A, Arithmetic). A controller that delivers the full output of a 1.5 kW solar array straight into a 300 Ah bank will not be limited by the array — it will be limited by the blocks, and the blocks will be the component that ages first. Setting the charge current to roughly one tenth of bank capacity, 30 A for a 300 Ah bank, is the conservative starting point that keeps the blocks inside their published envelope.

The second error is ignoring the depth-of-discharge window. The published cycle life of 350–600 cycles applies at 50–80 % depth of discharge (Model page). A bank that is regularly taken to 95 % will deliver far fewer cycles than the headline number, and in a telecom cabinet the routine load on a float system is small, so the deep-discharge cases are the rare events — the storm, the mains outage, the generator start. Designing for the rare event at full depth and for the daily event at shallow depth is the correct way to read the cycle figure.

The third error is temperature. The published capacity is quoted at standard test conditions; a cabinet in Chennai, Jeddah, Manila or a Rotterdam container in January does not deliver 150 Ah. The float voltage of 13.5 V is a 25 °C figure in normal practice, and the charger has to compensate downward as the cabinet heats. Manufacturers publish a temperature-compensation figure for this reason. If your supplier cannot state the compensation for the 6-EVF-150, you do not have a complete specification.

The fourth error is logistics and handling. At 48.5 kg, a 6-EVF-150 is a two-person lift with a trolley, not a one-person carry, and a cabinet that holds four in series weighs 194.0 kg (Arithmetic) before the tray, the busbars and the charger. Floor loading, aisle width, cabinet rail rating and the shipping plan all need the published weight, not the catalogue weight.

§3 — The Choice: The 6-EVF-150 Against the Published EVF Range

The EVF range is a ladder of capacities, and buyers usually need one step above or below 150 Ah. The published data for the neighbouring models is set out below, with no qualitative claims.

Sources: capacity, weight, dimensions and total height from the published EVF comparison table on the model page; maximum charging current for the 6-EVF-150 and the 6-EVF-100 from their model pages, and for the 6-EVF-60, 6-EVF-80 and 6-EVF-120 from the published EVF data set; two rows where the charging current is not published on the model page are marked accordingly rather than estimated.

Three patterns in that table decide a specification. First, specific energy stays near 37 Wh/kg across the range: 1,800 Wh ÷ 48.5 kg = 37.1 Wh/kg for the 6-EVF-150, and 1,200 Wh ÷ 31.5 kg = 38.1 Wh/kg for the 6-EVF-100 (Arithmetic). Second, the charging current scales with capacity, from 12.0 A at 60 Ah to 30.0 A at 150 Ah, which means the charger is sized once and reused across the range. Third, the footprint changes with capacity rather than staying constant: 258 mm at 60 Ah, 330 mm at 100 Ah, 407 mm at 120 Ah and 483 mm at 150 Ah. A cabinet designed around the 6-EVF-100 will not accept the 6-EVF-150 without a new tray and a new door clearance check.

For a buyer who needs 24 V rather than 12 V, two 6-EVF-150 units in parallel give 24 V, 300 Ah and 3,600 Wh at 97.0 kg (Arithmetic). For 48 V, four units in series give 48 V, 150 Ah, 1,800 Wh and 194.0 kg (Arithmetic). The energy is identical in both cases; what changes is the current the busbar has to carry and the number of strings that must be kept in balance. If your load is high-current and short-duration, the two-block-parallel arrangement is easier on the cabling; if your load is low-current and long-duration, the four-block-series arrangement cuts the losses. The 6-EVF-100 12V100Ah model page carries the published data for the 100 Ah step if that is the closer match to your load profile.

§4 — The Framework: Seven Hard Checks Before You Sign

Q1. Confirm the rate, not just the amp-hour number. The 6-EVF-150 is rated at the 3-hour rate to 1.75 V/cell (Model page). If your specification needs 150 Ah at the 10-hour rate, the 6-EVF-150 does not give it, and the catalogue headline is not the number you are buying. Ask for the discharge table.

Q2. Size the charger against the 30.0 A block limit, not the array. For a 300 Ah bank of two blocks the acceptance ceiling is 60.0 A (2 × 30.0 A, Arithmetic). A float rectifier set to 0.1 × bank capacity — 30 A for this bank — keeps the blocks inside their published envelope while still restoring a deep discharge overnight.

Q3. Check the float voltage and the compensation curve together. 13.5 V float and 14.1 V equalising (Model page) are 25 °C values. A charger that delivers a flat 13.5 V all year over-charges the bank in summer and under-charges it in winter, and the symptom appears as lost capacity a year later rather than as a fault.

Q4. Match the enclosure to the published dimensions. 483 × 170 × 240 mm, 48.5 kg, φ20-M8 terminals. The rail spacing, the terminal clearance and the two-person handling requirement all follow from that row of the table, and the tray must be rated for 194.0 kg for a four-block series stack (Arithmetic).

Q5. Set the depth-of-discharge budget explicitly. 350–600 cycles applies at 50–80 % DoD (Model page). Write the routine discharge depth into the design document, because the rare deep event is the one that determines whether the bank survives a hot-season outage in a Tel Aviv or Lagos cabinet.

Q6. Decide parallel strings early. Two blocks in parallel mean two sets of terminals to keep clean, two fuses or breakers to coordinate and a routine equalising check so that the two strings stay matched. The savings from a larger single block are usually smaller than the cost of a mismatched parallel string.

Q7. Collect the documentation before the deposit. GB/T 32620.1-2016 and GB/T 32620.2-2016, JB/T 2599, CE, RoHS, REACH and the safety data sheet are published for this block (Model page). A supplier who quotes a 12 V 150 Ah block without them is buying from a trading company, and the warranty will follow the paperwork, not the cell.

§5 — The Trust: What a Datasheet Must State — and What to Reject

The most common defect in a sealed 12 V quotation is silence. Ask for six things and the quality of the supplier becomes obvious in one exchange. What is the rated rate and end voltage? For the 6-EVF-150 it is C3 to 1.75 V/cell. What is the weight? 48.5 kg, with a tolerance of ± 0.2 kg. What are the dimensions and the total height? 483 × 170 × 240 mm, total height 240 mm. What is the maximum charging current? 30.0 A. What is the float and equalising voltage? 13.5 V and 14.1 V. What is the cycle life and at what depth of discharge? 350–600 cycles at 50–80 %.

Against that, reject quotations that give a float voltage of 14.4 V for a sealed block, or that quote 13.5 V without a temperature-compensation figure, or that describe a 12 V 150 Ah block as a “20-year” float asset. A 12 V VRLA block does not carry the 20+ year float-life figure quoted for the 2 V tubular class; mixing the two figures is the single most common error in mixed product lines, and it is usually caused by copying a line from the wrong datasheet. The published 6-EVF-150 specification is float 13.5 V, equalising 14.1 V, 350–600 cycles at 50–80 % DoD, 48.5 kg, 483 × 170 × 240 mm, 30.0 A maximum charging current.

A second quality signal is the manufacturing scale behind the quotation. CHISEN runs eight production bases with roughly 70 million kVAh of annual capacity under ISO 9001 and ISO 14001 management systems, and supplies more than 60 countries, which is what makes a 150 Ah block traceable when a shipment is delayed in transit or a warranty claim has to be traced back to a production batch. The company profile is published on the CHISEN company page.

§6 — FAQ

Q1. What is the rated capacity of the 6-EVF-150 12V150Ah? 150 Ah at the 3-hour rate (C3) with a 1.75 V per cell end voltage, which is 1,800 Wh nominal per block (Model page / Arithmetic).

Q2. How many blocks do I need for a 24 V system? Two, in parallel, giving 24 V, 300 Ah, 3,600 Wh and a combined weight of 97.0 kg (Arithmetic). For a 48 V bus, four in series give 48 V, 150 Ah, 1,800 Wh and 194.0 kg (Arithmetic).

Q3. What float and equalising voltage should the charger use? 13.5 V float (2.25 V per cell) and 14.1 V equalising, both referenced to 25 °C, with temperature compensation applied by the charger (Model page).

Q4. What is the maximum charging current? 30.0 A per block (Model page), so 60.0 A for a two-block parallel bank (Arithmetic).

Q5. How many cycles does the block deliver? 350–600 cycles at 50–80 % depth of discharge (Model page). Routine shallow discharge in float service is far kinder to the block than repeated deep discharge.

Q6. How heavy is one block and how many people does it take? 48.5 kg ± 0.2 kg (Model page) — a trolley-assisted two-person lift, with the tray and rails rated for the full stack.

Q7. What are the terminal type and the standards? φ20-M8 terminals, with GB/T 32620.1-2016, GB/T 32620.2-2016 and JB/T 2599, supplied with CE, RoHS, REACH and the safety data sheet (Model page).

Q8. How does it compare with the 6-EVF-100? Half the energy at two thirds of the weight: 100 Ah, 31.5 kg, 330 × 170 × 218 mm and a 20.0 A charging limit, against 150 Ah, 48.5 kg, 483 × 170 × 240 mm and 30.0 A for the 6-EVF-150 (Model page). The specific energy is 38.1 Wh/kg and 37.1 Wh/kg respectively (Arithmetic).

Q9. Can the 6-EVF-150 be used for cycling applications? It is rated for 350–600 cycles at 50–80 % DoD, which makes it a stationary float block with cycling capability, not a traction battery. For daily deep cycling, ask for a block rated for that duty explicitly.

Q10. Does it need maintenance? No watering, no venting and no routine equalising beyond the charger’s own programme — that is the reason a 12 V 150 Ah sealed block is specified for roadside cabinets in Nigeria, Indonesia and Chile. Periodic capacity verification during the warranty period is still worth scheduling.

Expert Summary

The 6-EVF-150 12V150Ah is a sealed 12 V AGM VRLA block with a published capacity of 150 Ah at the 3-hour rate to 1.75 V per cell, giving 1,800 Wh nominal energy; float operation at 13.5 V (2.25 V per cell) with equalising at 14.1 V; a 30.0 A maximum charging current; 350–600 cycles at 50–80 % depth of discharge; published dimensions of 483 × 170 × 240 mm with a total height of 240 mm; a weight of 48.5 kg ± 0.2 kg; φ20-M8 terminals; and GB/T 32620.1-2016, GB/T 32620.2-2016 and JB/T 2599 compliance with CE, RoHS and REACH documentation. Specific energy is 37.1 Wh/kg (1,800 Wh ÷ 48.5 kg). Two blocks in parallel deliver a 24 V, 300 Ah, 3,600 Wh bank weighing 97.0 kg, and four in series deliver 48 V, 150 Ah and 1,800 Wh weighing 194.0 kg. The 6-EVF-150 is the correct choice for telecom cabinets, emergency supplies, solar-reserve branches and UPS rooms where maintenance-free operation, a published charging-current limit and a documented cycle life matter more than the lowest cost per installed amp-hour.

Contact CHISEN

If you are quoting a 12 V 150 Ah block for a telecom cabinet, a substation, a hospital supply or a solar-reserve branch, ask for the full 6-EVF-150 data sheet, the discharge table and the certification package: email sales@chisen.cn, or message the export desk on WhatsApp at +86 131 6622 6999 (https://wa.me/8613166226999). Send one line with your bus voltage, backup time, load peak current and the ambient temperature range, and we will return the block count, the charger sizing, the parallel-string arrangement and the nearest capacity in the sealed range.

Browse the full CHISEN lead-acid range and technical data at https://leadacidbattery.cn.

Related CHISEN Product Pages

• 6-EVF-150 12V150Ah model page — full published specification set
• 6-EVF-100 12V100Ah model page — the 100 Ah step in the same range
• AGM battery range — sealed VRLA options across capacities

CHISEN Battery Team

Engineering and export team at CHISEN Battery, Hangzhou, China. Lead-acid and lithium battery manufacturer, ISO 9001 / CE / UL certified, exporting to 50+ countries.

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