I bought this one for my Air 3S from Amazon and it is great:
Hanatora Parallel Fast Charger for DJI Air 3S,Air 3,Rapid simultaneous Battery Charging Hub,Multi Drone Charge Accessories
I just bought the air 3s upgrading from my deceased air 2s, I found out however I need to buy a power brick, I will probably stick to the 3 batteris right now and I usually shoot up to 6 or 8 hours events which requires continuous battery use and...
I can't answer that, but I believe I can still say something valuable.
I sold my old Phantom kit last year. I had it for many years, several years after retiring it for the M2P. I had 5-6 batteries (which I took good care of per your...