This is something that's actually been bugging me for a while. Ever since I got my 3DS, it has had extremely inconsistent battery life, and I don't seem to notice any pattern at all. Randomly on some days, I'll leave it on sleep mode with wireless on and not use it at all, and it'll be completely dead in about 4 or 5 hours. But then on other days (like today), I'll leave it unplugged with wireless on for a good 8 or 9 hours AND play a 3DS game for about an hour, and it'll still be reading as having 4/4 battery bars filled. So what's up with that? Why does my 3DS have randomly short battery life on some days, and abnormally long battery life on others? Does anyone know? Has anyone else had this issue or know a fix? PS: I bought the 3DS used off ebay in December, so no idea what conditions the previous owner had it in (though it looks and works perfectly fine otherwise). Also, I have never used any special 3rd party accessories (battery packs, etc), and I always charge directly through the cable, not the charging cradle.