The device cannot be fully charged in time when using the charger

Troubleshooting steps:

① Charging duration standard: There are certain differences among different chargers. Special attention should be paid to the last 1% battery level (99%-100%), as the power decreases, the charging time will be longer.

② Importance of temperature control: The optimal charging temperature range is 20℃ - 25℃. Lithium iron phosphate batteries are extremely sensitive to low temperature. It is recommended to conduct charging verification within this temperature range.