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Charging laptop from 12v battery (ie. car)

  • 23-05-2008 8:20pm
    #1
    JohnCleary
    Registered Users, Registered Users 2 Posts: 10,209 ✭✭✭✭


    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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