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Which resistor to build 6V photo lithium tester?

Discussion in 'Electronic Basics' started by [email protected], Jan 1, 2005.

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  1. Guest

    Hello, and Happy New Year to everybody.

    My battery tester uses a (too weak) 10mA load for its 6V test.

    I'm guessing that a 2CR5 Photo Lithium battery should be tested at
    150mA, under load.

    Any electronics geniuses out there? What type/size resistor should I
    connect to the battery, while testing with my battery meter, to
    simulate a Canon SLR's load, and provide me with an estimation of the
    usability of my 2CR5 (and other 6V lithium) batteries?
    I also have a DMM.

    Thanks for all advise and tips.
  2. Andrew Holme

    Andrew Holme Guest

    Ohm's Law:
    R = V/I = 6V / 150mA = 40 ohms.
    Nearest preferred value = 39

    Power dissipation P = V*I = 6 * .15 = 0.9 watts

    Try a 39 ohm, 1 watt resistor.
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