EVE 280Ah battery datasheet

In this post,I will share you the eve 3.2v 280Ah cell datasheet.

The product can be applied for Vehicle power supply, Storage system, etc

1.Technical Parameter For EVE 280Ah Cell

#	Item		Parameter	Remark
1	Nominal Capacity		280.0 Ah	(25±2)℃，Standard charge and discharge
2	Typical Voltage		3.2 V
3	AC Impedance Resistance(1KHz)		≤0.25 mΩ
4	Standard charge and discharge	Charge / discharge current	0.5 C/0.5 C
		Cut off voltage of charge / discharge	3.65 V/2.5 V
5	Maximum charge/ discharge current	Continuous charge / discharge	1 C/1 C	According to continuous / pulse charge and discharge ammeters
		Pulse charge / discharge (30s)	2 C/2 C
6	Recommended scope of SOC		10%～90%	N.A.
7	Charging Temperature		0 ℃～55 ℃	According to continuous / pulse charge and discharge ammeters
8	Discharging Temperature		-20 ℃～55 ℃

#	Item		Parameter	Remark
9	Storage temperature	Short term (within 1 month)	-20 ～℃45 ℃	N.A.
		Long term (within 1 year)	0 ℃～35 ℃
10	Storage humidity range		＜90%
11	Self-discharge rate per month		≤3%/month	Temperature：(25±2) ℃，Storage scope of SOC： 30%~50%SOC
12	Dimension	Width	173.7 ±0.5 mm	Refer to Appendix I
13		Thickness (under 300±20 kgf , 30%～40% SOC )	72.0 ±1.0 mm
		Average thickness (200 pcs, under300±20 kgf , 30%～40% SOC )	72.0 ±0.5 mm
14		High（total）	207.5 ±0.5 mm
15		High（subject）	204.6 ±0.5 mm
16		Tabs Distance	123.0±0.3 mm
17	Battery weight		5.42±0.3 kg

2.Electrical performance for eve 280ah cell

No.	Item	Requirements	Measuring Procedure
1	Rate discharge performance at 25℃	Discharge capacity/nominal capacity×100 ％A）0.5C (A) ≥100％ B）1.0C (A) ≥98％	After standard charge and 1h rest, discharge to 2.5V cutoff with the current of 0.5 C (A), 1.0C (A), respectively. If the discharge capacity fails to meet the technical requirements, this test isallowed to be repeated three times
2	Discharge performance at different temperature	Discharge capacity/nominal capacity×100 ％ A)55℃≥95%(Cutoff 2.5V) B)-20℃≥70%(Cutoff 2.0V）	Measure the initial capacity and state of the battery：A) after standard charge and 5h rest at 55℃, discharge to 2.5V cutoff with the current of 0.5C(A)；B) after standard charge at 25±2 ℃ and 24h rest at -20℃±2 ℃, discharge to 2.0Vcutoff with the current of 0.5C(A).
3	The capacity retention and recovery at25 ℃	Capacity Retention ≥ nomi nal capacity×95％ Capacity Recovery ≥ nomi nal capacity×97％	Measure the initial capacity and state of the battery, after standard charge and stored for 28 days, discharge to 2.5V cutoff with the current of 0.5C (A), calculate the remaining capacity, the retention can be expressed as a percentage of nominal capacity. After standard charged and 30mins rest, calculate the discharging capacity (Ah), the recovery can be  expressed as a percentage of nominal capacity. The recovery is measured with discharge current0.5C (A) with 2.5V cut-off at (25±2 ) ℃.
4	cycle life at 25℃	≥6000 cycle @0.5C/0.5C	Under the 300kgf clamp, after standard charged and 30mins rest, discharge to 2.5V cutoff  with  the  current  of   0.5C(A)   at (25±2 )  ℃, and then  start the next cycle，endwith  the  capacity  decreasing  to  80%  of  the

			initial capacity. The number of cycles isdefined as the cycle life of the battery.
5	cycle life at 45℃	≥2500 cycle @0.5C/0.5C	Under the 300kgf clamp, after standard charged and 30mins rest, discharge to 2.5V cutoff  with  the  current  of   0.5C(A)   at (45±2 ) ℃, and then start the next cycle，end with the capacity decreasing to 80% of the initial capacity. The number of cycles isdefined as the cycle life of the battery.
6	End of life management	capacity/nominal capacity＜70%	During the use of the battery, the  battery  s hall be stopped when the end of life regul ations are exceeded.

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