Don Casey - Dragged Aboard Storm Tactics Handbook:
Modern Methods of Heaving-To for Survival in Extreme Conditions
by Lin Pardey and Larry Pardey


      

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lv-ab: Batteries in parallel

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Date: Fri Jun 03 2005 - 00:45:22 EDT

  • Next message: Lee Haefele: "Re: lv-ab: batteries connected parallel - revisited"

    OK. The concept is this/ If a single cell in a
    battery (wet, gel, or AGM) becomes shorted (less
    likely in order listed) due to the plating falling
    off and gathering in the bottom, or for any other
    reason, then the other batteries in the parallel
    group will source whatever current is required to
    provide equal voltage. This means that if you have
    done a good job installing the system and used
    heavy gauge wires between the batteries and to the
    breaker panel (we don't use fuses anymore right?)
    then huge amounts of current COULD flow from the
    good batteries to the bad battery.
     In order to prevent the total discharge of your
    battery bank (inevitable otherwise) one should
    install a circuit breaker on the positive post of
    each battery.
     I will be using magnetic 100 amp breakers, the
    fastest-blowing ones I can find.
     The real danger is not fire or explosion,
    although possible, but TOTAL discharge of the
    entire battery bank.

     To be avoided, I believe.

    Eric Thompson
    S/V Procrastinator
    South San Francisco

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  • Next message: Lee Haefele: "Re: lv-ab: batteries connected parallel - revisited"



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