Materials/tools: iPhone8.
To check the "maximum capacity" of Apple's mobile phone battery, please refer to the following operations:
First, open "Settings" on the phone desktop.
2. After entering the "Settings" page, find the column "Battery" and click "Enter".
3. Select "Battery Health" in the "Battery" page to continue with the next step.
Fourth, finally, you can see the "maximum capacity" of the battery on the "Battery Health" page (the maximum storage capacity is 100% relative to the new machine).