What Happens If You Charge Your Airpods Overnight. See the following from Charge your AirPods with charging case and learn about battery life - Apple Support. The case will go into a trickle charge mode when full capacity is reached which minimizes the number of charging cycles used while preserving the life of the battery.

I use my Airpods 05-15 hours a day and day 3 after I last charged my Airpods the case itself is down to 43 with about 4-5 hours total use which seems to be well below the advertised 24 hours. If you have AirPods Max charge them for at least 5 minutes using the cable that came with them. But it would be best if you dont do this frequently to avoid battery explosion very rare to occur.
Didnt look at my phone so I didnt see whether that was normal or abnormal.
The case will go into a trickle charge mode when full capacity is reached which minimizes the number of charging cycles used while preserving the life of the battery. Yes its perfectly fine to place your Airpods on the charger overnight if you want to. See the following from Charge your AirPods with charging case and learn about battery life - Apple Support. If you charge your AirPods Pro for 5 minutes in their case you get around 1 hour of listening time 11 or around 1 hour of talk time.

