Thank you.Maybe this helps a little: http://www.kouenstechcorner.com/nintendo-ds.html Seems not so easy.....also the Battery should be the same: https://ezflash.sosuke.com/viewtopic.php?t=13032 Good Luck.^_~
Unfortunatly the GBAtemp Thread lost the Pictures.... https://gbatemp.net/threads/guide-change-your-ezflash-3-in-1-battery-w-pics.132872/