If you're using your Airpods with an Android device, you should check out the AndroPods app, it allows you to see your Airpods' charge levels from the notification panel and also via
Do AirPods Work Well on Android Devices? - MacRumors
How To Pair AirPods Pro 2 To Any Android - YouTube
AirPods 2 (2019) review: Simple and convenient - Android Authority