Is It Safe To Leave A Trickle Charger On Overnight. This isnt necessarily going to harm your Airpods in any way. I am assuming the battery has water in it.

Yes its perfectly fine to place your Airpods on the charger overnight if you want to. You should leave a trickle charger on a battery for 24-36 hours for a fully discharged battery or 12-18 hours for one that is half-dead. Yes it probably will be safe to leave a 2 amp trickle charge on your battery overnight without hurting the battery.
And when consumption happens recharging happens.
Is it safe to leave a car on a trickle charger for 6 months. Others may only be left connected for a few days at most. You should leave a trickle charger on a battery for 24-36 hours for a fully discharged battery or 12-18 hours for one that is half-dead. During overnight charging your phone constantly uses battery to stay functional much like all things living.

