There may be several reasons for abnormal battery charging:
1. Battery aging;
2. The metal copper plate of the battery and the battery contact on the mobile phone are oxidized and polluted, resulting in poor contact;
3. The consequences caused by playing while charging.
Solution:
1. If the battery is aging, the battery can be replaced or frozen or high voltage stimulated;
2. If it is caused by the second condition above, we can use an eraser to carefully wipe the metal copper plate of the battery and the oxide layer of the cell phone battery contact, or use a cotton swab dipped with alcohol to wipe it, and then install it after the alcohol has dried;
3. Charging while playing with the mobile phone will cause the voltage in the machine to rise, and the load of running programs will increase, which will cause great damage to the main board and internal components and accelerate the aging speed.