It's possible that there's a new model of 3DS, other than the XL, that has an improved battery life. That would make sense! I just wanted to warn you about the battery life on the old 3DS handhelds, especially in case you were buying them used. (I buy most of my consoles and games used.) Since the 3DS XL is the one that I have, I only know that one specifically, out of the new releases, to compare to older versions.