I purchased my beloved Mavic 2 Pro with a smart controller a few years ago. My SC seems to have a dwindling battery reserve and I don’t have a MP2 controller. New SC and MP2 controllers seem unavailable. I do have an Air 2S with a fine controller but that won’t support the MP2. My SC supports both birds but are the batteries replaceable or is there any way to use the Air 2S attached to an iOS device for the MP2? Probably a crazy questions. I love the MP 2 and want to continue. Thanks in advance.