i agree 19 or more volts is the norm... easy get an inverter so you could use the power adaptor that came with the note book, 

raymond rynehart


----------------------------------------
> Date: Mon, 5 Feb 2007 19:19:43 -0800
> From: [log in to unmask]
> Subject: Re: [PCBUILD] Auxiliary Power for Notebook
> To: [log in to unmask]
> 
> Dean,
> 
> Most of the notebooks I have seen provide upwards of 19-20V from their AC
> adapters. Thus to use a car battery would require some sort of inverter.
> 
> Russ Poffenberger
> [log in to unmask]
> 
> -----Original Message-----
> From: Personal Computer Hardware discussion List
> [mailto:[log in to unmask]] On Behalf Of Dean Kukral
> Sent: Monday, February 05, 2007 4:50 PM
> To: [log in to unmask]
> Subject: [PCBUILD] Auxiliary Power for Notebook
> 
> 
> I am considering purchasing a higher-end notebook computer.
> 
> Two of the applications that I may use it for are digital imaging on and 
> control of my telescope in a remote area.
> 
> I would like to know if notebooks, for the most part, all use twelve volt 
> input.  (A transformer plugged into the wall and twelve volts dc entering 
> the computer.)
> 
> If this is the case, then I could use the same automobile battery that I use
> 
> to power the telescope to also power the notebook.
> 
> Is this likely to be possible, or do most notebooks use their own unique 
> voltages?  Which brands, if any, are likely to use twelve (or six or 
> eighteen) volts?
> 
> TIA,
> 
> Dean Kukral 
> 
>          PCBUILD maintains hundreds of useful files for download
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>          PCBUILD maintains hundreds of useful files for download
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