What are the correct charging and discharging methods for lithium batteries

The correct charging method of lithium battery: ⑴Standard charging method: charge with 0.2C5 constant current until the battery terminal voltage is 4.20V, change to constant voltage charging, until the charging current is less than 0.01C5, it is regarded as overflow. The standard charging method is often used to calibrate the battery capacity. Because the charging is too slow, it is rarely used in daily use. ⑵Fast charging method: Charge with 1C5 constant current until the battery terminal voltage is 4.20V, change to constant current charging, until the charging current is u003c0.01C5. Precautions for the fast charging method: ①The initial charging current should not be too large, and the battery will be overheated and leaking or bursting. ②When the battery terminal voltage reaches 4.20V, it must be switched to constant voltage immediately. The voltage requirement is relatively high (error u003c0.5%), and it must be measured with a four-and-a-half digit multimeter. Lithium battery discharge method: ⑴Standard discharge method: discharge at a constant current of 0.2C5 until the battery terminal voltage is 2.75V. Because it is difficult to satisfy this condition in daily use, it is of little significance. This method is mainly used for the calibration of battery capacity. ⑵Quick discharge method: Because the internal resistance of lithium battery is very small, high current discharge is allowed. At room temperature, discharge with 1C5 current can discharge for more than 54 minutes (above 90%); 1.5C5 discharge time is more than 30 minutes; 2C5 discharge time is 23 minutes Above; and promised to discharge more current for a short time. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: How many years can the lithium battery of a pure electric vehicle be used?