6037110锂电池 2500mah锂电池

no.

items

test method and condition

criteria

1

standard charge

标准充电

charging the cell initially with constant current at 0.2c and then with constant voltage at 4.2v till charge current declines to 0.02c

先用0.2c恒流充电至4.2v，再恒压4.2v充电直至充电电流≤0.02c

2

rated capacity

初始容量

the capacity means the discharge capacity of the cell, which is measured with discharge current of 0.2c with 3.0v cut-off voltage after standard charge.

该容量是指标准充电后，0.2c放电至3.0v截止电压所放出的容量。

≥2500mah

3

cycle life

循环寿命

test condition：

charge:  0.2c to 4.2v

discharge: 0.2c to3.0v

80% or more of 1st cycle capacity at 0.2c discharge of operation

测试条件：

充电：0.2c充电到4.2v

放电：0.2c放电到3.0v

当放电容量降至初始容量的80%时，所完成的循环次数定义为该电池的循环寿命

≥500

4

self-discharge

自放电

after the standard charging, storied the cells under the condition as no.6.4 for28 days, then measured the capacity with 0.2c till 3.0v

标准充电后，在no.6.4条件下贮存28天，再以0.2c放电至3.0v所放出的容量。

residual capacity >90%

余容量>90%

5

initial impedance of cell

电池初始内阻

internal resistance measured at ac 1khz after 50% charge    

半充状态下，测量其ac 1khz下的交流阻抗

≤40mw

6

temperature

characteristics

温度特性

1. according to item 4.1.1, at 25±5℃.

2. capacity comparison at each temperature, measured with constant discharge current 0.2c with 3.0v cut-off. percentage as an index of the capacity compared with at 25℃

1.在25±5℃条件下，用4.1.1方法将电池充电。

2.在不同温度条件下，用0.2c的电流恒流放电至截止电压3.0v。以25℃时放电容量为基准计算百分比。

-20℃: ≥50%

25℃:

60℃: ≥85%