Soundwave on 23 November 2016
5200 MaH for the battery (w/Joycon batteries factored in) is pretty small.
The Google Pixel C battery with a Tegra X1 is 9200+ MaH, and granted that has a larger screen, but it also only runs the X1 at 80% peak clock (meaning its down-clocked significantly).
I'd be surprised if 5200 MaH gives you even 3 hours unless the Tegra chip Nintendo is using is massively downclocked in portable mode (which isn't a good thing).
