Rechargeable batteries are consumables and have a limited service life. Therefore, the way to restore the Apple battery is to replace it in time, because with the aging of the battery, the performance of the mobile phone will be affected to some extent.
The reason why normal battery capacity cannot be restored is:
1, the decline of battery health is due to the decline of the maximum capacity of the battery after a certain number of charges and discharges, which is irreversible, that is, the decline of the maximum capacity of the battery cannot be reactivated to the maximum capacity by simply charging and discharging or not replacing the battery.
2. Apple lithium-ion battery works in charging cycle mode. If the used (discharged) power reaches 100% of the battery capacity, a charging cycle is completed, but it may not be completed in one charge, so you only need to charge it in time when there is no power during use, and don't wait until it is lower than 20%. However, after each charging cycle is completed, the maximum capacity of the battery will decrease slightly. After several charging cycles, at least 80% of the original battery capacity can be maintained. If it is further reduced, the battery needs to be replaced in time.