Characteristic of 2200mAh Li-ion cylindrical battery Without special instructions, the following tests should be done under the condition of : temperature(23±3), atmospheric pressure (86KPaï½?106KPa), relative humidity (45%ï½?85%), and the tests should be done within two weeks after receiving the products. the definitions of some nomenclatures of this specification standard Charge: Charge with current 0.2C5A to limit charge voltage under the condition of23±3 surrounding temperature, then change to charge with constant voltage till the current less than or equal to 0.02C5A. Electrical Characteristic for Cylindrical Rechargeable Electric vehicle li-ion Battery NO. Item Standard Test Method 1 Discharge rate capabilities Aï¼?1 C5A â?¥97% Bï¼?5 C5A â?¥95% Standard charged under the condition of normal atmospheric pressure and the environmental temperature of 23±3 and45%ï½?85%RH, then rest for 30mins and discharge at1C5Aã??5 C5Aã??10 C5A to the discharge cut-off voltage respectively. Charge/discharge cycle can be conducted for 3times before meeting the Standardsï¼?the same belowï¼? 2 capacity retention and recovery Residualcapacityâ?¥94 % Recoverablecapacityâ?¥*98% Standard charged under the condition of normal atmospheric pressure and the environmental temperature of 23±3ï¼? Stored for 28 days, then discharge at 0.2 C5A to 2.50Vmeasuring residual capacity; Then standard charge/discharge measure recoverable capacity. 3 Low TemperaturePerformance discharge capacityâ?¥85% rated capacityno distortion and no rupture The cell shall be charged in accordance with the standard charge. Then stored in the temperature of -10±1 for4h, Discharge at the constant current of 0.2C5A down to the end-of-discharge voltage 2.750V. 4 Cycle Life Charge: The cell shall be charged in accordance with RapidCharge condition. rest for 10mins.Discharge : 5C5A discharge to 2.75V, one cycle is finished, then rest for 30mins. Then repeat above steps, when capacity is less than 80% of initial capacity, the battery life is over.
