How much power does a laptop use?

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Thread: How much power does a laptop use?

  1. 05-23-2003, 12:13 PM #1
    kpxgq
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    How much power does a laptop use?

    I need to get one of those DC->AC convertors aka cigarette adapter... so i can run the lappy (inspiron 1100) in the car. They come in 50, 100, and 200 watts.... im thinking the 50 is too little.. and i dont want to spend the extra for the 200watt...
    bitfenix prodigy, i5 4670k, asrock z87e-itx, zotac gtx 970, crucial m500 msata, seasonic x650, dell st2220t
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  2. 05-23-2003, 12:18 PM #2
    SkyDog
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    You should be able to get a good idea by looking at the AC power brick for the computer. I just looked at the one for my old IBM ThinkPad 600E, and its output is listed as 16V / 3.36A. Multiply the voltage and current to get power, and that gives us 53.76 Watts. I'd guess you'd be fine with the 100W model, but double-check the math if you want to be sure.
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