Charging hot Airpords does little harm to headphones. Although AirPods belong to wireless charging earphones, they need to be placed in the charging bin for continuous charging. The charging hot you say should refer to the earphones that suffer from the heat transmitted by the charging bin when they are charged in the charging bin. Then this heat is normal. It has no effect on the headset itself, because it is a simple energy loss, and the headset is composed of hard plastic, which has relatively high requirements for heat resistance and heat resistance.