anyone here using 3ds power saving mode?, i have some questions, how much it i'll make my battery last longer, how it works, and if ill lost performance.

anyone here using 3ds power saving mode?, i have some questions, how much it i'll make my battery last longer, how it works, and if ill lost performance.

my n3dsxl lasts longer than the wii u pro controller with it

I always have power saving mode for my 3DS and it lasts longer than normal.
Indeed.
It just lowers your screen brightness a bit more than normal, see the manual
i just found out my old 2ds doesnt have it