1. Check whether the charger matches, you need to use the original charger, the use of a non-original charger may cause the power supply to be unable to be normally
2. Check whether the charger is damaged, you can replace the charger of the same specification for testing, if it is damaged, you need to replace it with a new charger for use
3. Check whether the charging interface is in good contact
4. Check whether the battery is damaged
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