Re: Proper Buddy Pairing

[Lee Hart <leeahart@earthlink.net>]

David Roden described one of the two common ways to "buddy" batteries:
> I think that what you want looks something like this.  Here the === and
> ### are heavy cable, the --- and | are light.  The +BBB- is a battery.
> 
>            #===-BBB+===-BBB+===-BBB+===-BBB+===#
>            #   |   |   |   |   |   |   |   |   #
> Pack neg===#   |   |   |   |   |   |   |   |   #===Pack pos
>            #   |   |   |   |   |   |   |   |   #
>            #===-BBB+===-BBB+===-BBB+===-BBB+===#

The other arrangements is like this:

  Pack neg=======-BBB+   -BBB+===-BBB+   -BBB+=======Pack pos
                 #   #   #   #   #   #   #   #
                 #   #   #   #   #   #   #   #
                 #   #   #   #   #   #   #   #
                 -BBB+===-BBB+   -BBB+===-BBB+

In this case, all the wires are heavy gauge (1/0 etc.). The staggered
arrangement is because batteries have such low resistance that the
interconnects become a substantial part of the total. Taking the + off
one, and the - off the other equalizes the number of connections and
wire lengths for each of the parallelled batteries.

The two are largely equivalent. Which you choose depends a lot on how
the batteries are physically located.
-- 
Lee A. Hart                 Ring the bells that still can ring
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<leeahart@earthlink.net>            Leonard Cohen