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How to power HP elite 8440p from DC??


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#1 jawnn

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Posted 30 August 2014 - 02:54 PM

I just got this refurbished laptop not knowing the power supply charger is too energy expensive for off grid living.
 
we have solar that will not be enough in the winter. hoping that some one can tell me how to run this old monster off 12volt dc.
 
the dc charger I got for it was a waste of money. 10.8 volts 55watt hours says the battery. I suspect that the charger provides only 10 percent more than the machine uses???
 
If I could find out the exact amount the hp machine uses,then it may be possible to get a power supply??  no owners manual supplied.  
 
​i have also had plenty problems with the finger pad and a file disappearing. Need a mouse.
 
I was looking at Hyperion chargers as a way to charge a second battery while at the library. But they are very expensive and I have no idea how to plug into a battery.

 

what kind of device should  use to power it up?
 

Help!

Edit: Moved topic from Windows 7 to the more appropriate forum.~ Animal


Edited by hamluis, 30 August 2014 - 07:02 PM.


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#2 Kilroy

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Posted 31 August 2014 - 09:01 AM

HP is one of the best manufacturers when it comes to drivers and manuals.  Here are the 8440p Manuals.






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