When the Bluetooth headset is charging, the light is on, but it is not charged may be poor contact, the reason for not connecting may be because the built-in program of the Bluetooth chip of the new headset is not activated, or the number of memory connections of the headset is full, the charger output voltage is too large or too small, the standard should be between 3.5-5 volts. You can try to change a data cable first. If the battery is in poor contact, or the protection board is damaged, you can check it with a voltmeter, or it may be the internal line is damaged. If you can't handle it yourself, it is recommended to hand it over to after-sales service.
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First of all, the power adapter may be damaged, replace the power plug; Secondly, there may be stains on the metal contacts inside the charging box, which can be cleaned up and then used; Finally, the charging case may be damaged. If you can't handle it yourself, you can contact the after-sales service for maintenance.
1, if the newly bought Bluetooth headset can not be charged, then it should be a battery failure, or a charger failure, directly return or exchange it.
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2, if it has not been used for a long time, it may be that the lithium battery of the Bluetooth headset is dormant.
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3, before charging, open the charging port, first check whether there are stains, clean the stains of the charging interface;
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4, and then plug in the charger, patiently charge, dormant lithium battery, normal charge 3-5 times, can be fully activated;
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5, if charged for a long time or not charged into the electricity, you can change a charger to try to see if the charger is broken;
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6, if there is no problem with the charger, then it is likely that the battery is broken, and it needs to be repaired or replaced with a new Bluetooth headset.
Maybe the battery problem can not be charged, the solution: forced restart or charge, if the two are not effective, it is best to contact the Bluetooth headset after-sales service or go directly to the physical store repair
In this case, the battery is usually damaged, and a new battery can be replaced.