Method 1:
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1, it is possible that the charging case is out of power.
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2. It is recommended to charge the charging box separately first.
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3. After it is full, put in the earphones to charge the earphones.
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Method 2:
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1. Dust in the earphone or charging box may also lead to failure to charge.
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2. Try to wipe the inside of the headset and charging case with tissue or glasses cloth.
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Method 3:
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1, if the above two methods do not work, it may be bad.
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2, if conditions, see if other airpods can be charged to confirm whether the charging box is damaged or the earphones are damaged.
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3, if you can not confirm, you can also go to the Apple repair shop directly to find a solution.
To check whether the AirPods fast charger is faulty, you are advised to check whether the charger is short-circuited.