The charging head with portable WiFi is often small in power and low in current output, so the charging speed is slow. In addition, if the charging cable material used is poor, poor contact will also affect the charging speed. At the same time, if you frequently power off or do not charge for a long time during use, it may lead to battery aging and affect the charging effect. It is recommended to use the original charger or a charger with large power, while maintaining good contact with the charging cable, and charging regularly to maintain the battery status.
The reason why the charging head that comes with you is always full of electricity, that is, the charger is not good.