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Doug,
I don't know about the proper
terminology Series-Parallel or
Parallel-Series. But then, I wouldn't put a lot
of faith in that salesman either.
From what you described of the charger, it sounds
like each of the three sections of the charger are actually separate
chargers. It's like the three separate batteries you have. Even
though you have three hooked in parallel you can still connect three separate 12
volt lights, one to each of them, if you want. If the sources and the
loads are otherwise isolated from each other, it makes no matter that one wire
from each is connected.
The same principal is used to get 120V from each
half of a 240V line in your house wiring.
That works fine for series but not on the
parallel part. As you know, in parallel, you have two wires from each battery connected to the next, so they
are no longer isolated. That's where the GOOD SALESMAN comes in. You
say you bought both chargers as he said you should? Yep! Maybe GREAT
salesman. I'd talk to their tech folks and find out how the sales guy
works his magic.
I bet they tell you can't hook it up that way, with
the two chargers, because they won't sense the batteries condition
properly.
Dan H.
----- Original Message -----
Sent: Friday, October 26, 2007 10:39
PM
Subject: [PSUBS-MAILIST] Series-Parallel
OR Parallel-Series
I have eight, 12 volt
batteries. Two are connected in parallel for the starter and other 12
volt stuff and the other six need to be connected in either Series-Parallel or
Parallel-Series. To me, Series-Parallel is connecting 3 batteries in
series and then connect that in parallel to the other 3 batteries that are
also connected in series.
A picture will help: http://www.submarineboat.com/sub/images/battery.jpg
I want to connect them in Series-Parallel because its less wire and
fewer connectors with two cables, however the tech at www.dualpro.com where I purchased my Three Bank Pro
Chargers told be to connect them in parallel as pairs and then connect the
pairs in series, or what I think should be referred to as
Parallel-Series. He was unyielding on his view but also unwilling or
unable to explain why.
So is there any difference between
Series-Parallel and Parallel-Series?
And all the tech would tell me
about how the Pro3 charger worked, was that it electronically isolated the
batteries so that disconnects were not needed. Can someone please
explain that bit of magic? The Three Bank Pro3 charger has 6 leads or a
positive and negative for each of 3 batteries. I have 2 of these
Three Bank Pro3 chargers so I
can charge all 6 batteries in the 36 volt supply.
Thanks for the
help.
Doug Jackson
Tulsa,
OK
www.submarineboat.com
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