1, most headphone manufacturers in the production will use a unified treatment method, that is, hold down the \"power switch\" and \"volume plus\" button for 15 seconds do not let go.
3, battery products in the case of not using, to often charge, keep the battery power to avoid damage. Extended data (reasons for not charging)
1, the charger output voltage is too large or too small, the standard should be between 3.5 and 5 volts.
2, the charging line transmission voltage is too large or too small, the standard should be between 3.5 and 5 volts.
3, the battery is in poor contact, or the protection board is damaged, you can check it with a voltmeter, or give it to the after-sales treatment.
4, the battery protection board is protective, when the voltage is lower than or higher than the required voltage, it will automatically protect.
It must be broken. When the Bluetooth headset has a power and no power, the powered headset can be taken out of the headset case, and the no power is inserted inside, and so on, the indicator light is displayed, indicating that it enters the charging mode.
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After the two batteries are fully charged, turn on the Bluetooth on the phone, find the device of the headset according to the above tips, and then let the phone automatically recognize the pairing, and connect it
First of all, we must find the cause, generally caused by Bluetooth headset battery damage, or damage to the charger, check whether the Bluetooth headset charger is intact, and try to use the original charger to charge the Bluetooth headset.
If the charger is good, consider that the Bluetooth headset battery is damaged, you can bring the machine, invoice until the nearby maintenance network, detect, repair or replace the battery.
2 Clean earphone or charging case contacts with alcohol;
3 Put the headset into the box and charge the charging box for more than 10min;
4 Put the earphones into the charging case and open the cover. Long press the function button for 16 seconds and let go until the indicator light outside the charging case flashes. Then put the left and right earphones into the charging case respectively to confirm whether the indicator light inside the case can be turned on.