Because the charge discharge is a reverse and positive chemical reaction, but the life is limited.
The battery must be used for a long time to learn to maintain, must be used scientifically:
1. Battery life is calculated according to the number of cycles, generally hundreds of thousands of times!
2. Calculation method of cycle number: 95% charging may be counted once full, depending on the internal ChargeIC model, there is a slight difference.
3. Do not discharge frequently. It usually takes 3 months to do a battery calibration. The principle is to completely discharge, fully charge, then fully discharge, fully charged, so you can turn off the power protection and manually do this.