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mAh power consumption

Discussion in 'Beginner Electronics' started by [email protected], Jun 30, 2007.

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  1. Guest

    need a little help with some math, If I have an impossibly perfect
    battery that provides a constant voltage right up untill it dies and
    the battery for example is 3500mAh, how long would the battery power
    say a 20mA led ?

    Would it be, 3500 / 20 = 175 hours ?

    Sorry if the post seems a bit to simple... Just need to be sure about

    Thanks for your help.

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