I was thinking about modding my 3ds xl first and then thinking about replace the sd card slot cover after it came, but im curious that after modding it and taling the battery off for just a moment would break all the modding. Btw the battery is the original nintendoLuma will be fine. Just be really careful about which battery you buy. Most 3rd party 2000 MaH batteries are generally about 400 MaH.