Yeah, in the simplest case you can battery power a pi with one of those rechargable battery-pack usb chargers meant for cellphones. Those require absolutely ze

Yeah, in the simplest case you can battery power a pi with one of those rechargable battery-pack usb chargers meant for cellphones. Those require absolutely zero technical skill, start around $20, and it looks like they can power a pi from a few hours to more than 10.