Solution:
If the mobile power can not be fully charged after charging for a long time, it is recommended to charge again after replacing the charging cable and adapter.
The charger output power is too low or the charging wire resistance is too large, which may take a long time to charge or cannot be fully charged. It is recommended to replace the charger with a higher power and the charging wire with a lower resistance.
If still unable to be fully charged, guide the after-sales inspection.