In the setting interface of Huawei mobile phone, find the "battery" option.
Click on battery health
In the battery interface, find the "Battery Health" option and click to enter the new interface.
Turn off smart charging mode.
In the new interface, find "Smart Charging Mode" and close the slider on its right.
Close slider
Find the "Smart Peak Capacity" below. Its function is that when your battery is aging, it should have stopped charging by 80%, and it will be intelligently adjusted to a lower level. Just close the slider to its right.