Ah I see, thanks for the info. I picked them up since I wanted to play Mother 3 without an emulator.
My main concern was if the cartridge would save properly.
I found this a little while ago, not sure if it's helpful or up to date though.
http://s21.photobucket.com/user/akadewboy/media/GBA Save Types/FLASH.jpg.html?sort=4&o=3
Also I just picked these up from eBay, they looked like legit reproductions...