1. Reason analysis:
1. The battery is damaged. 2. The system is faulty. 3, charger reasons or poor contact.
Ii. Solutions:
1, change another charger, or data cable to try, or clean the charging port.
2, boot into the recover mode to select advancsd advanced mode, select wipe Battery, clean battery traces.
3. Restore factory Settings to see if it is a system reason.
4, If the battery is damaged, can only be sent to repair and replace the battery.