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48 volt batteries ran from 24-2V in Series/Parallel

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Posted by IslandGuyDon on January 10, 2007, 12:42 am
I purchased 48-2 Volt GNB-PDQ-23 High Rate batteries,These are 4800Ah
each. I contacted GNB and they sent out Solid Copper connection bars to
run 24 in series to obtain a good 48 volt bank. I want to run in
Series/Parallel to double the capasity to total 9,600AH. I had to have
2-48 volt banks 1-for each meter since my home has 2 meters. I am a bit
confused on where to put the Parallel hook ups for the 2 banks. CAN
ANYONE HELP.........?
Does any one have a wire diagram to run batteries in

Posted by Charles Foot on January 10, 2007, 1:26 am
IslandGuyDon wrote:

Wow.... that's one hell of a battery bank. Just wondering what you are
planning on charging it with.
But on another tack...... if you don't know how to hook up a
series-parallel bank (not to mention the pitfalls inherent in such a
setup), it sounds to me as if you lack the basic skills to be tackling
such a job....

Posted by Bill Kaszeta / Photovoltaic Re on January 10, 2007, 2:06 am

Sounds like you want two inverters, one for each meter service.

Select your inverter that is designed for use with batteries.

Follow the manufacturer's recommended wiring.

If in the USA, understand the National Electrical Code, and if
you do not fully understand, get a licensed electrical contractor
to help.  What you are working with can be dangerous, the
PDQ batteries are capable of very high short circuit currents,
proper fusing, disconnects, cable sizes, grounding, etc. is important.

If you have two inverters, there is little reason to parallel the
Bill Kaszeta
Photovoltaic Resources Int'l
Tempe  Arizona  USA

Posted by Ulysses on January 10, 2007, 6:26 pm

Yea.  Get some insulation on those solid copper connectors.

Posted by IslandGuyDon on January 10, 2007, 11:06 pm
 Hey thank you for your time.


Get some insulation on those solid copper connectors.

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