My AirPods batteries died after two years and would not play for more than 30-minutes. This tip fixed it:
Following these steps can re-calibrate your AirPod battery and restore it back to a seemingly brand new state.
Not quite brand new, but awfully close. More than 3 hours for me.
- Reset the AirPod case by holding down the white button at the back for 10 or more seconds.
- Then, re-pair them with your iPhone.
- Afterward, completely drain both AirPods and the case to zero through normal usage.
- Finally, place the dead AirPods in the dead case and charge them both to full or 100 percent.