This is really starting to get annoying. People are saying both. I need to have a definitive answer on whether or not the EZ-Flash IV has a rechargeable battery or not. I looked up on the EZ-Flash Wiki and it said that the battery in it is rechargeable. This is the only GBA flashcart I would be able to get, considering it is impossible to find an EFA-Linker nor an EZ-Flash III anymore. I could get a Supercard SD or a Supercard miniSD, but both those don't have a rechargeable battery (and they only support up to 64kb save files anyway.) tl;dr does the EZ-Flash IV have a rechargeable battery?