1, the data line contact is poor, it is recommended to change a line or use the original data line;
2, the charging bank can not be charged because 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 to try;
3. The power supply of the charging treasure is excessive, resulting in no charging. Use a cable with usb ports at both ends, plug one end into the outlet of the charging bank, plug one end into the u port of the computer, one to three minutes, you can activate. Take it off and then charge it normally, it's good;
4, check the charging treasure interface, circuit board, battery, to see where the fault, the most vulnerable charging treasure has the interface, battery, circuit board these three plates, any bad will lead to the charging treasure can not be charged or used.
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It may be that the charging treasure is broken, if the charging treasure is not bad, the basic you put a few days to take out and then charge can be charged in, if there is no electricity in the situation, you must consider changing the charging treasure, the charging treasure is certainly bad, you can buy another one, there is not much money, I hope my answer will help you
1. In most cases, the battery has entered a dormant state. It is recommended to change the charging mode. For example, instead of using a charger to charge, use a computer to charge. It will take about 30 minutes to charge.
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2, it is possible that the charging cable or charger is broken. It is recommended to replace it with a new one.
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3, the mobile phone system problems can not be identified. Download the refresh package from the official website, and use the Xiaomi phone Assistant to refresh the system to the latest version. If not, continue;
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4. Mobile phone hardware problems. At this time, only the mobile phone can be repaired at the maintenance place