1. The interface is faulty.
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Because the mobile power supply in order to adapt to a variety of mobile phone applications, the mobile power supply is configured with a common mobile phone interface. If your phone port and power bank port do not work, you should find a cable. If the interface is consistent, or can not be charged, it is necessary to check whether there is poor contact between the two interfaces of the data cable, it is recommended to change a data cable test.
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2. Voltage or current problem.
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Because some mobile phones are special and the voltage is different, they can not be charged, and the normal lithium battery is 3.7V voltage.
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3. The charging treasure enters the charging protection state, resulting in no charging.
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You can plug the charging bank into the USB output of the computer and charge it for 2 hours to release the charging protection state, and then it can be used normally.
It may be that the data cable or power adapter of the charging bank is damaged and can not be charged. Replace the data cable or power adapter and charge it again.
2. The charging interface or power switch of the charging bank may be faulty, and the parts need to be repaired and replaced;
3, may be the charging treasure battery aging, need to repair and replace the battery (if the charging treasure has been insured, it is recommended to directly replace the new charging treasure).
The reason why the charging bank can not charge the phone:
1, the data line contact is poor.
2, the charging head is not good, or the output current is too small, you can use the computer to charge, or change the 2A adapter to charge the charging bank.
3. The charging bank is faulty.
4, the charging treasure itself can not be charged.
5, the charging treasure entered the protection state, resulting in no charge.
6, the charging treasure can not be charged due to excessive electricity.