How much does Apple's mobile phone battery need to be changed for health?

Generally, after the health of the iPhone battery is lower than 80%, the battery needs to be replaced. When the health is lower than 80%, the system will force the performance management function to be turned on, and the mobile phone will get stuck in some cases. This restriction can only be lifted by replacing the battery.

The loss of the battery under normal use, the health of the battery is less than 80%. Generally, after charging the iPhone for more than 500 times, that is, after using the iPhone for about 14- 18 months, the battery life will be reduced and the capacity will reach about 80%. It is recommended to change the battery. Because Apple takes 80% as the threshold, if it is lower than 80%, the system will forcibly turn on the performance management function, and the mobile phone will be stuck. It is recommended to replace the battery.