What batteries would power a home PC ?

[Turtle]

___Some other clarifications on C1ay's post about the little cart. CCA refers to Cold Cranking Amps, & applies to batteries intended for starting combustion engines. These batteries have an internal design that delivers a large amount of current all at once & reliably in cold weather. This 'internal design' is in regard to the arrangement & patterning of the lead arrays submerged in the acid. In general these batteries perform poorly for continuous use and/or deep discharge.
___The marine batteries C1ay mentioned also go by the term deep-cell batteries & they have an internal design that optimizes them for long steady use & deep (complete) discharge. These batteries have ratings in Amp Hours, not CCA. (I don't know any simple conversion). So a deep-cell 100 amp hour 12 volt battery will power a 1 amp load for 100 hours. Most of the inverters draw about 1/2 amp for their own circuitry. Now use watts = amps * volts equation to figure out how long you can run a given piece of equipment on a given battery before needing recharging.
___I believe these deep cell batteries found their "marine battery" tag because they find considerable application in 12 volt trolling motor use.

[Dark Mind]

Gracias. Much appreciated clarification C1ay and Turtle.

[alexander]

ok, so my next question will be, why not use a laptop and come up with power for that? Oh and yes, i should have mentioned marine batteries, i thought about them yesterday before i went to bed (around 12:30, but I gotta be at work at 7am, so i chose sleep), Optima is pretty good, they guarantee 50 amp hours on their deep cycle marine 12 volt batteries, but you can custom order those to be made for anything you want to, size, voltage, capacity, amperage...
Oh and Turtle, I'm pretty sure you are right about the "marine battery" tag thing...