The OnePlus Buds Pro's single earphones charge wirelessly when charged, which is why each earphone doesn't need to be charged separately when working independently. The Buds Pro uses a technology called Qi wireless charging, which charges by placing the headset on a compatible wireless charger, eliminating the need for a charging cable connection. Therefore, when the headset is placed on the charger, the power will gradually increase, so that you can ensure that the headset maintains sufficient power while in use.
This design is convenient for users, because they don't have to worry about the battery of the headset, just put it on the charger from time to time to ensure that the headset always has enough charge.
1. There are generally two possible causes.
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2, the first kind of Bluetooth headset internal failure, such as battery or circuit damage, charging interface short circuit, etc.
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3. If it is for the above reasons, the headphones need to be sent for repair.
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4, the second charger or data cable has a problem, resulting in charging can not continue.
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5, replace the matching charger or data cable to recharge.
In this case, you can restore the factory Settings of a single Bluetooth headset, and then put it back into the headset to charge it for a try.