1, if you can charge the headset, but the battery of the box can not be charged.
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2, or the headset battery is broken, the box battery can be charged. The reason for this battery failure is that the box is not usable, and it is recommended to take it for repair or replacement.
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3, if you do not give up, you can change a charging cable to try.
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4, or change to the computer's usb interface output charging, ensure that the jack contact is good, if you can not charge, according to the above repair or change the box.