Charging and Discharging Performance 充放电性能
NO.
Items
Test Method and Condition
Criteria
1
Standard Charging
标准充电
Charging the cell initially with c***tant current at 0.2C and then with c***tant voltage at 4.2V till charge current declines to 0.05C
先用0.2C恒流充电至4.2V，再恒压4.2V充电直至充电电流≤0.05C
2
Initial Capacity
初始容量
The capacity means the discharge capacity of the cell, which is measured with discharge current of 0.2C with 2.5V cut-off voltage after standard charge.
该容量是指标准充电后，0.2C放电至2.5V截止电压所放出的容量。
≥ 2.2Ah
3
Discharging at High Temperature
高温放电
1) Standard Charge标准充电
2) Put the cell into 60&plu***n;2℃ high temp oven for 2 hours and discharge at 0.2C CC to 2.5V at the high temperature. 在60&plu***n;2℃的高温箱中恒温2h，在该温度下0.2C恒流放电至2.5V。
Discharging capacity初始容量90%
4
Discharging at Low Temperature
低温放电
1) Standard Charge标准充电
2) Put the cell into -40&plu***n;2℃ high temp oven for 4 hours and discharge at2.5A for 5 min and then change to1A to 2.5V at this temperature.
在-40&plu***n;2℃的高温箱中恒温4h，在该温度下恒流440mA放电35分钟，然后改用220mA恒流放电至2.5V。
Discharging capacity
初始容量85%
5
Cycle Life
循环寿命
A battery unit shall be repeated 100 charge/discharge cycles, charged at CC-CV 0.2CmA to 4.20V , laying the battery 5min, discharged at 0.2CmA to3.0V end voltage, After 500 cycles, recording the discharging capacity
电池用0.2CmA恒流恒压充饱电至4.2V,搁置5min,用0.2CmA电流放电到3.0V,记录放电容量,循环500次.
Nominal capacity
标称容量
Cycle life循环寿命≥500 times次
6
Self-discharge
自放电
After the standard charging, storied the cells under the condition as No.6.4 for 28 days, then measured the capacity with 0.5C till 2.5V
标准充电后，在No.6.4条件下贮存28天，再以0.5C放电至2.5V所放出的容量。
Residual capacity：>90%
余容量：
>90%
7
Initial Impedance of Cell
电芯初始内阻
Internal resistance measured at AC 1KHz after semi-charging
半充状态下，测量其AC 1KHz下的交流阻抗
≤ 30mW
8
Cell Voltage
电芯电压
State of Shipment
出货状态
3.8V~4.1V
9
Temperature
Characteristics
温度特性
1. According to item 5.5, at 20&plu***n;5℃.
2. Capacity comparison at each temperature, measured with c***tant discharge current 1C with 2.5 V cut-off. Percentage as an index of the capacity compared with 100% at 20℃
1.在20&plu***n;5℃条件下，用5.5方法将电池充电。
2.在不同温度条件下，用0.5C的电流恒流放电至截止电压2.5V。以20℃时放电容量为基准计算百分比。
-20℃: ≥60%
20℃: 100%
50℃: ≥85%
10
Storage
Characteristics
储存特性
1. According to item 5.5, at 20&plu***n;5℃.
2. The battery shall be stored at 50&plu***n;5℃ for 7days and rested at room temperature for 1 hour then measured with c***tant discharge current 1C with 3.0V cut-off.
1. 在20&plu***n;5℃条件下，用5.5方法将电池充电。
2.将电池在50&plu***n;5℃条件下贮存7天，然后在常温下静置1小时，用0.5C的电流恒流放电至3.0V截止电压。
Retained Capacity
≥85%
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（以上价格仅供参考，具体价格以实际详谈为准。）