*. | Items | Test Method and Condition | Criteria |
1 | Standard Charge 标准充电 | Charging the cell initially with constant current at 0.5C and then with constant voltage at 4.2V till charge current declines to 0.05C 先用0.5C恒流充电至4.2V,再恒压4.2V充电直至充电电流≤0.05C | |
2 | Rated Capacity 初始容量 | The capacity means the discharge capacity of the cell, which is measured with discharge current of 0.5C with 3.0V cut-off voltage after standard charge. 该容量是指标准充电后,0.5C放电至3.0V截止电压所放出的容量。 | ≥1350mAh |
3 | Cycle Life 循环寿命 | Test condition: Charge:1C to 4.2V Discharge:1C to3.0V 85% or more of 1st cycle capacity at 1C discharge of Operation 测试条件: 充电:1C充电到4.2V 放电:1C放电到3.0V 当放电容量降至初始容量的85%时,所完成的循环次数定义为该电芯的循环寿命 | ≥300 |
4 | Self-discharge 自放电 | After the standard charging, storied the cells under the condition as No.4.4 for 28days, then measured the capacity with 1C till 3.0V 标准充电后,在No.4.4条件下贮存28天,再以1C放电至3.0V所放出的容量。 | Residual capacity >90% 剩余容量>90% |
5 | Initial impedance 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* | ≤50mW |
6 | Cell Voltage 电芯电压 | As of shipment. 出货状态 | 3.6V~3.9V |
7 | Temperature Characteristics 温度特性 | 1. According to item 4.1.1, at 20&plu*n;5℃. 2. Capacity comparison at each temperature, measured with constant discharge current 1C with 3.0V cut-off. Percentage as an index of the capacity compared with 100% at 20℃ 1.在20&plu*n;5℃条件下,用4.1.1方法将电芯充电。 2.在不同温度条件下,用1C的电流恒流放电至截止电压3.0V。以20℃时放电容量为基准计算百分比。 | -20℃: 70% 60℃: ≥90% |
8 | Storage Characteristics 储存特性 | 1. According to item 4.1.1, at 20&plu*n;5℃. 2. The battery shall be stored at 60&plu*n;5℃ for 7days and rested at room temperature for 1 hour then measured with constant discharge current 1C with 3.0V cut-off. 1. 在20&plu*n;5℃条件下,用4.1.1方法将电芯充电。 2.将电池在60&plu*n;5℃条件下贮存7天,然后在常温下静置1小时,用1C的电流恒流放电至3.0V截止电压。 | Retained Capacity ≥85% |