The answer is as follows: Apple AirPods can be charged in the following ways:
1. Use the charging case: Place the AirPods in the charging case, then connect the case to the power adapter or USB port on your computer. Make sure the charging case has enough power, and the indicator light on the charging case will show the charging status.
2. Use wireless charging: If you purchased an AirPods charging case (2nd or 3rd generation) that supports wireless charging, you can place the case on a compatible wireless charging mat to charge it. Make sure the charging pad is connected to the power adapter or USB port on your computer.
No matter which charging method is used, when the AirPods headphones are placed in the charging case, the headphones themselves will also start charging. After charging is complete, you can determine whether charging is complete by looking at the indicator light on the charging case, or by checking the battery status on the connected device.