I've seen some people run an inverter off a large set of batteries, to power mobile devices and whatnot or even game consoles. My thoughts are, if I can rig some lamp batteries together and use a portable tv I could power something such as an SNES (super nintendo/famicom).
The SNES would require 12V (suitable for some larger batteries, or some in series) and ~200mA possibly less when running. Would it be a good idea to plug a battery directly in to where the DC socket is, sans the regulation and all that? Does the adapter provide some sort of expected power or behavior different from a "pure" DC source?
Also a silly question, assuming I've a pile of 6V lamp batteries that could supply 100mA each - would I be able to place them in series+parallel to achieve 12V + higher maximum current draw for this purpose?