These can both be purchased from store.Nintendo under 3DS|2DS replacement parts
2DS and 3DS: 1300mAh
New 3DS XL and 3DS XL: 1750mAh
Unfortunately the "New 3DS" uses a 1400mAh battery. I have no idea if either of the other batteries will fit it.
ebay /itm/184018674283 I bought one of these...
@SylverReZ, I also heard one of the Prince of Persia games was so unfinished that it required the "24/7 online" drm so a puzzle could be done and the game could be finished. And that when the Ubisoft servers were closed the (cracked) game was impossible to finish or something like that
I like that games can be fixed after the fact, hate that it's being abused via beta tests... And DLC... I was a 7800 owner back in the day and loved Impossible Mission, turns out I couldn't beat it because it was actually impossible lol