WHEN using same batteries in mini 3 then mini 4 ,I never bother doing batteries NEVER had an issue
When I purchased the Air 3s several months ago I never did the batteies again not having any issue
I decided to update both aircraft and now have the internal RID activated. Thank you. By the way, for my Mavic 2 Pro the Part 107 registration did not even show an option for using an external RID module on that aircraft! Must be the manufacture...
I guess if you have one updated just try it and see if it works in the non-updated bird. Otherwise, why not just update both drones so you don't need the RID module. I mean, since it's built in why not use it. I updated my M2Z and Smart...