Hey all, i got a slot one 16g bit ds fire card in late march early april something like that. all of a sudden ive been having problem after problem w/ it. phantom hourglass and pokemon diamond/silver wont save (yes i have it on flash 4mb), my ninja gaiden save is just gone for some reason and tetris ds stopped working all together when i try to load the game. it comes up w/ an error message. ive been looking around the forums and im starting to think its the battery in the card but i didnt think it would go that fast. is there a way to fix the battery? and also ive erased the card completely and gotten rid of any multiple saves from one game and have the latest firmware and xmenu. i havent found any other methods on how to fix this but if you know any help is incredibly appreciated.