If you can charge the headset, the battery of the box is bad and cannot be charged; If the earphone battery dies, the box's battery can be recharged; It's all because of the bad battery. We have to replace it.
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Change a charging cable, change the computer USB port output electricity, jack plug contact is good, try not to solve it.
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A single charge gives you up to 5 hours of listening or 2 hours of talking on your AirPods.
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With multiple charges in the charging case, you can listen for more than 24 hours or talk for up to 11 hours.
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If you put the AirPods in the charging case for 15 minutes, you can listen for up to three hours or talk for more than an hour.
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When the AirPod battery is low, you will hear one or both AirPods beep. You'll hear a beep when the battery is low, and another beep just before the AirPods are about to shut down.
Solution: It is recommended that you first check whether your charging cable connector is caused by poor contact, you can change a line to try to charge it, if it is still not charged, there may be a problem with the interface of your battery bin, or the battery bin internal hardware is damaged, this situation is still recommended to go to Apple after-sales repair