*Take Lishen 2.6Ah 18650 as an example:
1. The battery cell should be charged using constant current charging-constant voltage charging. The charging voltage of a single cell cannot exceed 4.20V, and the charging cut-off current is greater than or equal to 1/20C. Taking into account the control deviation of the charger, it is necessary to ensure that the battery charging voltage is lower than 4.20V. Even under abnormal conditions, the charging voltage should not exceed 4.23V to avoid overcharging. Charging voltage higher than 4.20V will shorten the cycle life of the battery;
2.The charger should be equipped with a complete charging detection device. The charging detection device can detect the fully charged state of the battery through timer, current detection and open circuit voltage detection. When one of the charging time, current or voltage detects that the battery is fully charged, the charging circuit should be completely cut off. Avoid trickle charging.
3.The battery cell charging should be carried out at the specified current at a temperature of 0℃~+45℃. When the battery cell temperature exceeds this range, it should be allowed to stand until the battery temperature reaches the above range before charging.