Bought an Air 2s refurb a number of months ago, it came with the newer 3850ma battery. Cool I thought. Anyway, I had a mishap with the refurb so I just bought a new, non-refurb, 2s but the new one (from the DJI store) came with the 3500ma battery. Should I assume the new model has been sitting around for a while and should I care?