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Thread: Power for a display? How does Watts factor in

  1. #1
    Navigator Anhydrite's Avatar
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    Power for a display? How does Watts factor in

    I was looking at 16 inch TVs as a Base staion Display and I am not sure how the watts drawn factors in to battery selection.

    Several TVs run on 12v DC. I see where the watt draw is listed...say 24 Watts.
    How do I know what size battery I will need if I want to use a 3S LIPO. do I need a higher C rating for higher Watts.

    I am bad with electrical math so sorry about the basic questions.

  2. #2
    Crashing Vitamin J's Avatar
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    24 watts / 12v = 2 amps.

    1 hour * 2 amps = 2amp-hours = 2000mah battery.

    2000mah * 1.8 = 3600mah for 80% discharge after 1 hour.

    e: I can see your point, electrical math is hard.

  3. #3
    Navigator Anhydrite's Avatar
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    Quote Originally Posted by Vitamin J View Post
    24 watts / 12v = 2 amps.
    Vitamin J, Thanks for the math

    I now feel stupid...
    w/v=amps .....duh.

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