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Charging laptop from 12v battery (ie. car)

JohnCleary · 2008-05-23 20:20:48

Hi guys, I want to be able to charge my laptop battery from my boat battery (same system as car) I only realised that my laptop (Compaq M2000) is 18.5v input, so I need an inverter to step up the voltage Now, I can just use a normal 12v => 230v inverter and plug in my normal home charger, but it seems a waste going 12v =>…

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23-05-2008 9:20pm

#1

JohnCleary

Registered Users Posts: 10,207 ✭✭✭✭

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Posts: 9263

Hi guys,
I want to be able to charge my laptop battery from my boat battery (same system as car)

I only realised that my laptop (Compaq M2000) is 18.5v input, so I need an inverter to step up the voltage

Now, I can just use a normal 12v => 230v inverter and plug in my normal home charger, but it seems a waste going 12v => 230v => 18.5v

Does anyone know if a more direct inverter from 12v => 18.5v can be bought?

Thanks in advance for any tips/links

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#2 23-05-2008 9:59pm
majiktripp

Registered Users Posts: 2,471 ✭✭✭

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Posts: 2370

http://cgi.ebay.ie/Auto-Car-Adapter-For-Compaq-Presario-V2000-V4000-M2000_W0QQitemZ200225885455QQihZ010QQcategoryZ60252QQrdZ1QQssPageNameZWD2VQQcmdZViewItemQQ_trksidZp1638Q2em122#ebayphotohosting
Regular car charger adapter should do fine.
Just seach ebay for Compaq M2000 adapter or car charger etc. The one I linked to is just an example but should work fine.

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#3 26-05-2008 12:08pm
JohnCleary

Registered Users Posts: 10,207 ✭✭✭✭

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Posts: 9263

Cool thanks for the link

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