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Thread: In car Laptop power

  1. #1
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    In car Laptop power

    from the lighter socket,,
    using a Jaycar 12v dc regulator,,


    will this CHARGE the lappys batterys?
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  2. #2
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    I would think so, the same as a charging a mobile phone would.

    (I'm guessing here Pedro, but fairly certain)

  3. #3
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    This is the one that I used from Jaycar. It works well with my Toshiba.



    See: Jaycar Electronics

    Cheers
    Chris

  4. #4
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    Pedro,
    if it has the same output voltage (or the same output voltage is selectable on it) and it can output the same or more current (Amps) as the mains powered one for the laptop, then it will cahrge the lappy exactly as if it was plugged into the wall. somwhere on the laptop mains power supply it will say:

    "Output 17VDC 3.4A"
    Or something like that, the 17V (or whatever) is what you put the switch on the 12 Volt one to, just make sure the Amps on the 12 Volt supply is the same or higher than what is on the mains one, (in the above example 3.4)
    Instead of VDC it may just say "v" and have a dotted line above a solid line.

    The other thing that is REALLY importand is to get the voltage polarity correct, check the output of your mains power supply with a multimeter, then make sure the same connections on the 12 Volt are the same way around, if you get this wrong, you could destroy your lappy, once it's right, and you are sure, I'd put a little tape or heatshrink around the reversable connector just to be sure it never gets changed.

    I hope that wasn't too long-winded, and helps you (not sure how much you know about electricity etc.), feel free to ask me further questions if you like!



    Fraser

  5. #5
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    Yep - just plug into the power slot on the lappy and it will power the laptop and recharge the batteries.

    I use my Toshiba in the car all the time with a jaycar 12v - 18v (variable) power supply and never had a problem.

    Garry
    REMLR 243

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    1977 FC 101
    1976 Jaguar XJ12C
    1973 Haflinger AP700
    1971 Jaguar V12 E-Type Series 3 Roadster
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  6. #6
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    Exclamation power suppy

    yes you need to check what amps you need to charge the laptop,I own a ACER aspire 6920,big sucker 4.7 amps,and I need 19 volts to power and charge my laptop battery,I have a MEIND laptop universal adaptor,you can ajust what volts you need .......hope that helps

  7. #7
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    I bought a 150W pure sine wave inverter from Jaycar. The inverter plugs into the cig socket but sits behind the driver's seat. Connected a power board to the 240V outlet and keep the laptop and phone charged continually from the power board...makes it a lot easier!

  8. #8
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    Quote Originally Posted by Pedro_The_Swift View Post
    from the lighter socket,,
    using a Jaycar 12v dc regulator,,


    will this CHARGE the lappys batterys?
    Peter, have you bought a DC regulator yet. I have one that I dont us anymore, I can send it up with the compressor if you want it?

  9. #9
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    Quote Originally Posted by Hoges View Post
    I bought a 150W pure sine wave inverter from Jaycar. The inverter plugs into the cig socket but sits behind the driver's seat. Connected a power board to the 240V outlet and keep the laptop and phone charged continually from the power board...makes it a lot easier!
    240v in a moving car bad news if you have an accident - rescuers have been zapped - but as far as I know not killed yet - through having 240v inverters on in a car.

    Why not just a the 12v (in) laptop voltage out converter - they work well. Can't get easier than that

    Garry
    REMLR 243

    2007 Range Rover Sport TDV6
    1977 FC 101
    1976 Jaguar XJ12C
    1973 Haflinger AP700
    1971 Jaguar V12 E-Type Series 3 Roadster
    1957 Series 1 88"
    1957 Series 1 88" Station Wagon

  10. #10
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    There is also a lot of losses and excess heat when converting from 12v DC to 240vAC and then back to DC for the laptop.

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