There are three main reasons why the headset cannot be charged:
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The first reason is that it is not the original charger.
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Solution: Bluetooth headphones need to use a special charger to charge them, which is good for the charging interface and battery.
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The second reason is that the charger of the Bluetooth headset is broken.
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Solution: Try charging your Bluetooth headset with a new charger.
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The third reason is that the battery of the Bluetooth headset is damaged.
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Solution: Take the invoice, headphones, etc., to the nearby maintenance outlet, test, repair or replace the new battery.
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Cause three, probably not well inserted, poor contact caused.
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Solution: Reconnect the joint to ensure that the contact is intact.
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Usually when using Bluetooth headphones, pay attention to protect the battery, charge it in time, and do not overuse the battery