I just bought my 3rd battery for my M2Z. I bought it from Amazon at a pretty good price. It is a genuine DJI Battery and the Serial No Decoder shows a manufacture date of November, 2019, pretty close to my other two batteries. I received the battery and it is on the charger right now for it's initial charge. I almost passed on buying this battery due to it's description on Amazon. It is listed as "DJI Mavic 2 PART 2 Intelligent Flight Battery". For the life of me, I can't figure out the "Part 2" in the description. Anyone?