Tools/materials: Apple 13pro max, IOS 15.4. 1, setting 1.0.
1. Find the "Settings" icon of the mobile phone and click to enter the settings interface.
2. Slide down in the setting interface, find the "Battery" option, and click Enter.
3. After entering the "Battery" interface, find "Battery Health Options" and click Enter.
4. In the "Battery Health" interface, you can see the maximum capacity option. The percentage displayed behind this option represents the health of the battery, and a lower percentage means that the health of the battery is reduced and the power consumption is faster.