Most headphone manufacturers will adopt a unified treatment method during production, that is, hold down the \"power switch\" and \"volume up\" buttons for 15 seconds at the same time.
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.
Bluetooth headset is the application of Bluetooth technology in the hands-free headset, so that users can avoid annoying wires, free to talk easily in a variety of ways. Since the advent of Bluetooth headsets, they have been a good tool for mobile business people to improve their efficiency. Bluetooth is a short range wireless communication specification with low cost and large capacity. Bluetooth laptop is a laptop with Bluetooth wireless communication function.
The reasons and solutions are as follows:
1, may be a Bluetooth headset without electricity, don't think the author make a big deal, some Bluetooth headset box failure, there is only a phenomenon of charging a headset, the headset and no indicator light, so there is a ring a ring.
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Solution: Replace the headphone charging case.
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2. Maybe one of the headphones is damaged.
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The solution: Buy the broken headset. For example, Apple's Bluetooth headset supports single-earphone purchase.
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3, the pairing between headphones is not successful, the phone is successfully connected to one of the headphones, and many Bluetooth headphones appear with only one sound and one no sound are caused by this reason.