I am of the opinion that one or the other fits, it is simply a further development. Do you want to use the Mini accessories for the Mini 2? I think that the battery etc. are not the same (they are the expensive parts). The small parts are bought cheaply if need be. I would therefore think twice about definitely changing if you want to use the rechargeable batteries. Otherwise, I would check the DJI website to see which models the individual parts are compatible with.
https://store.dji.com/ch...