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RICHARD A. WHITE
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    Lifetime Member

    Also note,

    If the ignition use .5 milliamps each time it fires the plugs and the motor turns 600 rpm, that is using 300 milliamps of electricity every minute.

    300 milliamps x 30 minutes of run time is 9,000 milliamps divided by 1,000, (1,000 milliamps = 1 amp) gives the total amps used for 30 minutes, which is 9 amps used?

    So with that info we need to determine the capacity of the battery and then you can figure out how long the battery will last running your motors.. I found a chart online, I will add a link to the site so you can see where all this mumbo jumbo comes from.

     

    https://www.dnkpower.com/how-to-calculate-battery-run-time/#time

    That amount of draw is probably why the 10ah battery is best.

    I am no electrician, and I am not even sure I have done those calculations correctly, but man that was fun digging into this…

     

    Somebody save me…LOL

    http://www.richardsoutboardtools.com
    classicomctools@gmail.com

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