6-EVF-60 12V60Ah UPS Battery: Complete Buyer Guide for Data Centres and Telecom

Answer First

The 6-EVF-60 12V60Ah is a 12 V, 60 Ah sealed VRLA AGM monobloc from CHISEN Battery, published at 258 × 170 × 160 mm and 18.8 ± 0.2 kg, with a C3 capacity rating. Every number a purchasing team needs to size a string, set a charger and check an incoming container is on the factory record: float 13.5 V, equalise 14.1 V, cut-off 1.75 V per cell, maximum charge current 12.0 A, self-discharge no more than 3 % per month at 25 °C, and a working range of −15 °C to 50 °C. Cycle life is published as 350–600 cycles at 50–80 % depth of discharge, and design float life as 2–5 years. Full technical parameters for the model are listed on this model page.

Sizing logic for a buyer is straightforward once the block count is fixed. A single 12 V battery carries six 2 V cells in series and holds about 720 Wh at the ten-hour rate: 12 V × 60 Ah = 720 Wh. Two batteries in parallel on the same bus give 120 Ah at 12 V, so 12 V × 120 Ah = 1,440 Wh, with the same float and equalise setpoints and the same 1.75 V per cell cut-off. Divide the required load in watts by the bus voltage to get the amp-hour figure, then round up to the next published capacity in the 6-EVF line rather than inventing a size.

The commercial question is rarely the cell itself. It is whether the delivered goods match the record, whether the charger is configured to the published setpoints, and whether the supplier will confirm the numbers on paper. This guide walks through the published specifications, the failure patterns that show up in UPS cabinets, the choice between neighbouring capacities, a four-step framework for approving a supplier, and a delivery inspection procedure your technician can run before the 6-EVF-60 12V60Ah goes into the rack.

Key Takeaways

• Published ratings are fixed: 12 V, 60 Ah, C3 rate, 258 × 170 × 160 mm, 18.8 ± 0.2 kg, φ14-M6 terminal, all taken from the factory model record.
• Charging setpoints are published, not guessed: float 13.5 V (2.25 V per cell), equalise 14.1 V (2.35 V per cell), cut-off 1.75 V per cell, maximum charge current 12.0 A.
• Nominal stored energy is 720 Wh per battery: 12 V × 60 Ah = 720 Wh; two in parallel on the same bus give 12 V × 120 Ah = 1,440 Wh.
• Life data has limits you can plan around: 350–600 cycles at 50–80 % depth of discharge, 2–5 years design float life, self-discharge no more than 3 % per month at 25 °C.
• Environment constrains the installation: the published working range is −15 °C to 50 °C, so ventilated cabinets and controlled rooms are part of the design, not an afterthought.
• Verification before acceptance: check the printed label against the datasheet, confirm charge current limits in the charger menu, and measure the open-circuit voltage of every block on arrival.

§1 — 6-EVF-60 Quick Specifications

The table below reproduces the published parameters for the 6-EVF-60 12V60Ah exactly as they appear on the factory model record, with the source of each line marked. Any figure that is not published is written as not published rather than estimated, so nothing in this section needs to be confirmed twice.

§2 — The Pain: Three Failure Modes That Cost More Than the Battery

Buying a VRLA monobloc for a UPS or data-centre cabinet is rarely the hard part. The hard part is what arrives, what the charger does to it, and what the cabinet does to it. Three failure modes account for most of the field returns and most of the arguments between an importer and a supplier.

The first is runtime that does not match the promise. A cabinet sized on nominal ampere-hours alone will disappoint: at C3 the 60 Ah rating assumes a three-hour discharge, while most backup windows are measured in minutes, and capacity falls as temperature drops. Buyers who treat 60 Ah as a fixed number across the whole year end up with a string that passes the handover test and fails during the first winter outage. The published working range of −15 °C to 50 °C tells you the battery is specified for a controlled environment, not for an unheated outdoor enclosure.

The second is a charger that was never reconfigured. The published float setpoint for the 6-EVF-60 12V60Ah is 13.5 V and the equalise setpoint is 14.1 V, with a maximum charge current of 12.0 A. A cabinet that ships with a generic profile set to 13.8 V float will keep the string in a chronic overcharge condition, driving water loss and heat, and a charger set to 13.4 V will leave the string chronically undercharged. Neither fault shows on the label, and neither shows up in a document exchange. It only appears in the string temperature and the water-loss record months later.

The third is undocumented substitution. A block that arrives without a traceable model record, without a printed rating label, or with a case size that is a few millimetres off the published drawing, gives you nothing to argue with when it fails. This is why every specification line in this guide carries its source, and why the 6-EVF-60 12V60Ah figures — 258 × 170 × 160 mm, 18.8 ± 0.2 kg, φ14-M6 terminal — are worth checking against the physical goods on the pallet, not only against a catalogue page. A supplier who publishes a full parameter set and honours it on delivery is a supplier who can be audited.

§3 — The Choice: Sizing the 6-EVF-60 12V60Ah Against Neighbouring Capacities

The correct choice is the smallest published capacity that covers the load with the headroom your operating profile requires. In practice, most UPS and telecom installations land on a 12 V string of two batteries in parallel, and the decision is which two.

Work the arithmetic before the catalogue. Take the load in watts and divide by the bus voltage to get the current: a 1,200 W load on a 12 V bus draws 1,200 W ÷ 12 V = 100 A. At C3 a single 60 Ah block sustains 60 A for three hours, so two 6-EVF-60 12V60Ah blocks in parallel sustain 2 × 60 A = 120 A, giving 12 V × 120 Ah = 1,440 Wh of stored energy at the ten-hour rate. The same cabinet on the next capacity down — 6-EVF-50 at 50 Ah and 15.25 ± 0.2 kg — offers 12 V × 100 Ah = 1,200 Wh; the step up to the 6-EVF-80 at 80 Ah and 25.7 ± 0.2 kg offers 12 V × 160 Ah = 1,920 Wh. For an identical 1,200 W load those two edges sit at 1.00 and 1.60 times the nominal load respectively.

Two rules of thumb keep that arithmetic honest. First, size for ageing rather than for the nameplate: published capacity of this line is a 50–80 % depth-of-discharge cycle figure of 350–600 cycles, so a string sized at exactly 100 % of peak load has no margin for capacity fade over its 2–5 year design float life. Second, size the enclosure for the block you actually chose. The 6-EVF-60 12V60Ah occupies 258 × 170 × 160 mm at 18.8 ± 0.2 kg per unit, and a two-block configuration in a 19-inch tray leaves a defined clearance for terminals, interconnects and airflow. If your cabinet was drawn around the 50 Ah block, the physically larger 60 Ah and 80 Ah options will not bolt in as drawn — compare the published case dimensions of the sibling model page against your mechanical drawing before you sign the order.

Where the load is steady and the window is short, chemistry choice narrows as well. A VRLA AGM monobloc needs no electrolyte service and no ventilation for hydrogen release, which is why it remains the default for cabinets, telecom power rooms and small server rooms. If your project instead needs deep-cycle cycling, tubular gel or flooded OPz families are the right line for that duty, and they are quoted separately.

§4 — The Framework: A Four-Step Approval Path

A four-step path keeps the purchase defensible and shortens the handover. It applies equally to a distributor filling a container and an OEM building cabinets for a customer.

Step 1 — Freeze the specification before you price. Write down voltage, capacity, rate, case size, weight, terminal type, float and equalise setpoints, cut-off, charge current limit, working temperature and design life. For the 6-EVF-60 12V60Ah these are the published values in §1, not estimates. Freeze them as a written specification sheet that both sides sign, and attach the model record as the reference. Pricing first and specifying afterwards is where substitutions enter.

Step 2 — Audit the documentation, not the promise. Ask for the parameter sheet, the certificate set, the packaging and labelling detail, and the test report for the shipment. Check that the case dimensions and weight on the sheet match the drawing your mechanical team approved, and that the terminal type (φ14-M6 for the 6-EVF-60 12V60Ah) matches the busbar and the cable lug your technicians carry. If a supplier will not put a full parameter set in writing, treat that as the answer.

Step 3 — Align the electrical settings before the first load. Record 13.5 V float and 14.1 V equalise in the charger configuration, set the current limit at or below the published 12.0 A, and confirm the ambient assumption of 25 °C used for the ≤3 % per month self-discharge figure. Define the alarm thresholds for the string in the monitoring system so that a drifting cell is caught before it drags the whole string down.

Step 4 — Run a documented acceptance test. On arrival, count and photograph the blocks, verify the model label on every unit, measure open-circuit voltage of each battery, and confirm that no unit has been damaged in transit — check for cracked cases, deformed terminals and electrolyte odour. Then recharge at the published setpoints and record the result. Keep the delivery note, the label photographs and the voltage sheet together; that file is what you will need when a replacement claim arrives months later.

§5 — The 6-EVF Line: Published Data for Sizing Decisions

The table below lists the published figures for the neighbouring capacities in the 6-EVF line and the closest 6-DMF block, so that a sizing decision can be made against real numbers rather than a marketing band. All values are taken from the factory model record; where a line is not published for a given model, it is stated as not published.

If your requirement sits outside this table — a different capacity, a different case size, an OEM-specific label or a private cable length — say so on the enquiry. The full 6-EVF line is available through the full product range, and the manufacturer can quote the exact block against your drawing.

§6 — The Trust: Factory Evidence Behind Every Shipped Block

The 6-EVF-60 12V60Ah is produced by CHISEN Battery, a manufacturer based in Hangzhou, China, operating 8 production bases with an annual capacity of 70 million kVAh. The certification set held by the factory includes CE, ISO 9001, ISO 14001, UL and IEC. The product line runs from flooded tubular OPzS2 and gel tubular OPzV2 through the 12 V VRLA 6-DZF, 6-DMF and 6-EVF series, so a buyer working across several cabinet sizes deals with one manufacturer rather than several supply chains.

That structure matters commercially. A 6-EVF-60 12V60Ah ordered today is built against a parameter set that the same plant uses tomorrow, which means replacement orders three years later are dimensionally and electrically identical to the original — 258 × 170 × 160 mm, 18.8 ± 0.2 kg, φ14-M6 terminal, 13.5 V float, 14.1 V equalise, 12.0 A maximum charge current. For a distributor who stocks the block for its installer network, that continuity removes the most expensive form of stock risk: a shelf full of units that no longer fit the cabinets they were bought for.

Logistics are handled the same way. Export consignments leave from the Chinese ports of Shanghai and Ningbo, and the export desk coordinates documentation, packing and freight to the destinations where 12 V VRLA cabinets are installed: importers in India, Nigeria, Kenya, Vietnam and Brazil buy through distributors in Mumbai, Lagos and Mombasa, with onward routing to Jebel Ali and Dubai for Gulf projects and to Rotterdam for European distribution. Standard export packing with palletised, strapped and labelled cases is used for the VRLA line, and the same model record travels with the shipment so that the receiving warehouse can check the goods against the specification rather than against a photograph.

What the factory does not publish is stated as such in this guide. Torque values for the φ14-M6 terminal, the exact warranty terms attached to a shipment, and the internal acceptance-test protocol are not on the published model record, so they are to be requested from the factory with the quotation. A written answer on those three points, together with the parameter set reproduced in §1, is the complete evidence pack a procurement file needs.

§7 — FAQ

Q1: What are the published nominal voltage and capacity of the 6-EVF-60? The published nominal voltage is 12 V and the nominal capacity is 60 Ah at the C3 rate (Model page). A 12 V monobloc contains six 2 V cells in series, and the nominal stored energy is 12 V × 60 Ah = 720 Wh per battery at the stated rate.

Q2: What float and equalise setpoints does the manufacturer publish for the 6-EVF-60 12V60Ah? Float is published at 13.5 V, which is 2.25 V per cell, and equalise at 14.1 V, which is 2.35 V per cell (Model page). Both values apply to every block in the 12 V VRLA line, so a single charger profile covers the group as long as the current limit is set per model.

Q3: What is the maximum charging current for the 6-EVF-60 12V60Ah? The published maximum charge current is 12.0 A (Model page). Set the charger’s current limit at or below this value; neighbouring blocks in the same line are published at 10.0 A for the 6-EVF-50, 16.0 A for the 6-EVF-80, 20.0 A for the 6-EVF-100 and 24.0 A for the 6-EVF-120.

Q4: What are the case dimensions and weight of the 6-EVF-60 12V60Ah? The published case size is 258 × 170 × 160 mm (L × W × H) and the published weight is 18.8 ± 0.2 kg (Model page). Check both figures against your mechanical drawing and against the goods on arrival, since a case that differs from the drawing will not seat in a tray designed to the published envelope.

Q5: What terminal type and torque does the 6-EVF-60 use? The published terminal is φ14-M6 (Model page). The recommended connection torque is not published on the model record and is to be requested from the factory with the quotation, together with the lug and busbar sizing you intend to use.

Q6: How many cells does a 12 V string contain and what bus voltage does it give? A 12 V battery contains six 2 V cells connected in series, giving a 12 V nominal bus (Model page). Across that string the published float of 13.5 V equals 6 × 2.25 V per cell and the equalise of 14.1 V equals 6 × 2.35 V per cell, while the 1.75 V per cell cut-off corresponds to 6 × 1.75 V = 10.5 V at end of discharge.

Q7: What is the published design float life of the 6-EVF-60 12V60Ah and at what temperature? Design life is published as 2–5 years in float service, with a self-discharge rate of no more than 3 % per month at 25 °C and a working range of −15 °C to 50 °C (Model page). Cycle life is published as 350–600 cycles at 50–80 % depth of discharge, and the life figures assume controlled ambient temperature rather than an unheated enclosure.

Q8: How should an importer verify the 6-EVF-60 12V60Ah on delivery? Check the count and the printed label on every block against the published record — 258 × 170 × 160 mm, 18.8 ± 0.2 kg, φ14-M6 terminal — measure the open-circuit voltage of each battery, and inspect for cracked cases, deformed terminals and electrolyte odour. Then recharge at 13.5 V float with the current limit at or below 12.0 A and keep the delivery note, label photographs and voltage sheet together as the acceptance file.

Q9: Which certifications does the CHISEN factory behind the 6-EVF-60 12V60Ah hold? The factory holds CE, ISO 9001, ISO 14001, UL and IEC certification, and operates 8 production bases with an annual capacity of 70 million kVAh in Hangzhou, China. The 6-EVF block sits inside the 12 V VRLA series, produced alongside the 6-DZF, 6-DMF, flooded tubular OPzS2 and gel tubular OPzV2 lines.

Q10: How do I request a quotation or samples for the 6-EVF-60 12V60Ah? Send the model, the quantity, the destination port and the required delivery window to the export desk at sales@chisen.cn or jack@chisen.cn, or message WhatsApp +86 131 6622 6999. State the items that are not published on the model record — connection torque, warranty terms and the factory acceptance-test protocol — so that the quotation answers them in writing alongside the price.

Expert Summary

The 6-EVF-60 12V60Ah is a fully published 12 V, 60 Ah C3 VRLA AGM monobloc from CHISEN Battery, specified at 258 × 170 × 160 mm and 18.8 ± 0.2 kg with a φ14-M6 terminal, and the whole buying decision can be reduced to three checks. First, confirm the numbers match your duty: 720 Wh nominal per battery (12 V × 60 Ah), float 13.5 V, equalise 14.1 V, cut-off 1.75 V per cell, maximum charge current 12.0 A, self-discharge no more than 3 % per month at 25 °C, working range −15 °C to 50 °C, cycle life 350–600 at 50–80 % depth of discharge and design life of 2–5 years. Second, size honestly: for a 1,200 W load on a 12 V bus, two blocks in parallel give 12 V × 120 Ah = 1,440 Wh, and the neighbouring 50 Ah and 80 Ah options give 1,200 Wh and 1,920 Wh against the same published float, equalise and cut-off values, with charge currents of 10.0 A, 16.0 A and 24.0 A that must not be reused silently across models. Third, protect the purchase with paperwork: freeze the specification before pricing, audit the documentation, set the charger to the published setpoints, and run a documented acceptance test on arrival. Everything not on the model record — terminal torque, warranty terms, the acceptance-test protocol — is to be requested from the factory in writing rather than assumed.

Contact CHISEN — 24-Hour Response

CHISEN Battery — Hangzhou, China. Export desk: sales@chisen.cn | jack@chisen.cn | WhatsApp +86 131 6622 6999 | www.chisen.cn

Send the model, quantity, destination port and any OEM-specific requirement, and the 6-EVF-60 12V60Ah specification set, pricing and lead time will be returned against your enquiry.

chisenbattery@gmail.com

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