It is hard to beat a laptop in this application, but if you insist on a
desktop, you might consider modifying a UPS to use ships batteries as it
also solves other requirements for low power consumption like TV and stereo
and they are very efficient.
Steve

"Skip Gundlach" wrote in message
link.net...
Here's hoping someone in these groups has already done this...

I know that the typical computer power is 12v to most drives - but much
less
to other components.

I'm thinking about a flatscreen monitor and a desktop for onboard
computing/DVD watching, vs a laptop, but wouldn't do it if I had to do the
inverter route.

Anyone modified flatscreen and desktops to take 12V - and actually get
*that* much vs full charged voltage?

Thanks.

L8R

Skip