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Re: lv-ab: Battery Charging: How Charge Large House Bank?

From: (no name) (no email)
Date: Fri Aug 27 1999 - 08:32:55 EDT

  • Next message: (no name): "lv-ab: Cell Modems"

    In a message dated 8/19/99 2:18:02 PM Eastern Daylight Time,
     writes:

    <<
     I am planning to install a 1300 amp-hour bank (12 6-volt golf carts) in
     addition to my three starting batteries. With them I will have a Heart
     3000-watt inverter and a Link 2000R. The inverter has a built-in 140-amp
     charger, but the conventional formula (as I understand it) says I should
     have at least 435 amps of charging power: (1300*25%) + about 25 amps for
     existing load + 25% reserve. My question is, how do I get close, or at
     least closer, to that?>>>>
     
     
    Ron,

    20% rather than 25% will do.

    1300 AH is a huge battery bank.

    I use 4 batteries for 440 AH capacity but then only use 220 AH to prolong the
    life of the batteries. I use 150 to 200 AH per day.

    If the battery bank you want is 1300 AH, only 650 will be available because
    conventional wisdom says to discharge the batteries to only half of their
    capacity for longevity. C(capacity)/5 is a common charge rate, recommended
    by my Trace inverter manual. Thus 650/5 is 130 amps.

    Norm
    S/V Bandersnatch
    Anchored Sandy Hook NJ

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