way
1. Take the iPhone system version 13.5 as an example, find the battery in the settings, and click the battery;
2. Enter the battery, find the battery health in the battery, and click the battery health;
3. Enter the battery health status. In the battery health state, you can view the maximum capacity and peak performance capacity. If the maximum capacity is lower than 80%, the phone will prompt 1 to repair the battery.
4. In the battery health interface, click the blue font to learn more ... Go to Apple official website for more details;
5. Go to Apple official website to explain the battery and performance of iPhone, as well as the information of maintenance options.