1, the charging cable or charging head may be damaged, check whether the charging device can be used normally; 2, the temperature is too low may also lead to charging failure, it is recommended that the charging environment is above 0 degrees; 3, it may be that the metal contact inside the charging box has dirt, clean it up and then try to charge it.
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1, check whether the charging cable or charging head is damaged, if the charging device can not charge other devices, then the user needs to replace the new charging cable or charging head;
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2, the temperature is too low, the charging and discharging temperature of lithium battery is best between 0-45\/60 degrees Celsius, if the temperature is lower than 0 degrees, it is likely to lead to ineffective charging;
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3. Whether the metal contact inside the charging box has dirt, clean it and then try to charge it;
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4, in addition, it is also possible that the charging box has been completely damaged, the user can directly contact the after-sales service for maintenance.