The data cable is in poor contact, it is recommended to use a new wire or use the original data cable.
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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.
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3, the charging treasure excessive electricity, resulting in can not charge, with both ends are usb port line, one end inserted in the charging treasure outlet, one end inserted into the computer u port, one to three minutes, you can activate, take off and then normal charging, it is good.