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 change props when they get damaged or feel brittle
I experaminted several years ago using a mini 2 getting my props on ebay with NO name props .BIG mistake.Stick with a good name brand .All my drones sport Master Airscrew five years and...