The Supercard, in theory, is a "future proof" solution for playing NDS games ... it runs games form removeable media (CF, SD, MiniSD, microSD), and since it directly writes NDS saves to that media in real-time, it requires no onboard battery. IN other words, if the motherboard on a Supercard doesn't fail, it will work "forever." AFAIK, it's the only NDS flashcart/adapter on the market that has this capability, since all others (EZIV, M3, G6) use battery-powered memory to hold a save until the console is rebooted or a save is manually forced by soft reset. In case you hadn't noticed, I really like that the Supercard does this direct saving thing. I know my Supercard won't last forever, but at least I'll never have to be concerned about a battery dying on me. Now, for GBA, is there any product that similarly doesn't require a battery? Before you say Supercard ... yeah its true, but as we all know the Supercard cannot play ALL GBA games faithfully. I have an EFA256 cart and it is fantastic for 100% faithful running of GBA games, but like everything else there's a big round battery on the board, and someday it's gonna fail. I'd like to have a GBA cart that's just as good as my EFA, but doesn't need the battery. Does such a product exist?