[SEL] 32volt Delco light plant

Dickie reb1952 at bellsouth.net
Tue Jul 31 19:17:47 PDT 2007


Most farm supplies around here have 8 volt batteries, lot of folks replace 6
volts with the 8 volts on old tractors and cars.

Dick Bauer
----- Original Message ----- 
From: <JR504 at aol.com>
To: <sel at lists.stationary-engine.com>
Sent: Tuesday, July 31, 2007 8:05 PM
Subject: Re: [SEL] 32volt Delco light plant


>
> In a message dated 7/31/2007 8:04:16 P.M. Eastern Daylight Time,
> rustaholic777 at yahoo.com writes:
>
> That  page said to use two 12 Volt batteries and one 8 Volt battery to get
32
>  Volts.  I still haven't checked out the source mentioned to buy 8 Volt
> batteries though.
>
>
>
> The problem with using two 12V + 8V (or 6V) batteries is that it is pretty
> much impossible to find batteries with the same internal resistance.  Same
> goes for using 3 different types of 12V batteries.  You are charging them
in
> series, so if the internal resistance is different the voltage drops
across them
> will all be different.  One battery can overcharge and one not  charge
much
> at all.  Even though it might not sound like that's possible,  try
measuring
> the voltage across each battery as the light plant is  running.  Let's say
the
> light plant is charging 39V.  That's 13V  each.  If the batteries are
different
> I've witnessed voltage drops from  10V-17V...one discharging (if it was
> charged) and one being overccharged.
>
> Also, as Arnie mentioned, any 3 identical 12V gadgets can be wired in
series
> and will run quite nicely on a light plant.
>
> Joe
>
>
>
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