How can I tell if my AirPods are charging with a wireless station?

To tell if your AirPods are charging on a wireless station, look at the status light on the front of your AirPods case:

• When placed on a compatible charging mat, the light will turn amber or orange, indicating that the AirPods are actively charging, and will turn green when fully charged; 
• If there's no light, check the alignment of the case on the charging pad or ensure your AirPods are properly placed inside the case.

This Apple Support page may help.

Charge AirPods, AirPods Pro, or AirPods Max - Apple Support