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.
Battery health check method, taking iphonexrios12.4.1as an example:
1, open the settings of Apple 7, and click the battery in the page;
2. You can see the battery health status in the battery interface, and click;
3. You can see the maximum capacity of the battery on the battery health page.