Both AirPod Pro and AirPod Max headphones are just short of their ... and if you don't mind buying this older generation that uses a lightning charger (the latest update will have a USB-C charger ...
Plug the charging cable into your AirPods Max’s charging port, then plug the other end into a USB charger or port. Wait at least 30 minutes for the firmware to update. Reconnect your AirPods Max ...