[citation][nom]bin1127[/nom]if you play a sniper and camp all the time you might not have enough juice to fire off your shot.[/citation]
You say it like that's a bad thing... #$%#^&@^!@ campers. 😛
[citation][nom]WyomingKnott[/nom]How about pedals, like an old-fashioned sewing machine, running a generator to power the computer?[/citation]
Well, to be honest, part of the limit there is the outright power consumption of the PC; it's like suggesting using a set of AA batteries to power a PC, when it consumes energy WAY too fast to last an appreciable length of time on them; a typical enthusiast's gaming rig, even with less-than-top-end parts, is looking at >300 watts. A top-capacity lithium AA battery holds about 2 amp-hours @1.5 volts, meaning that a single battery would, ignoring loss due to voltage scaling and high amperage draw, power said 300-watt rig (which doesn't count the monitor!) for a grand maximum of 36 seconds.
Meanwhile, peripherals like mice run on a FAR lower power draw, so using batteries and 'self-recharging' mechanisms such as that can make sense.