[RE-wrenches] 24 volt Battery Bank comparison

[Wayne Irwin]

Hello all. 

I am indeed thinking of 13 - 2 volt batteries to make up a 26 volt battery bank for the 24 volt system.

Thoughts for or against are welcome.

Wayne Irwin, EE
Director of Engineering

Pure Energy Solar International Inc. 
State Licensed Solar Contractor

License # CVC56695 

Wayne at PureEnergySolar.com
 

http://pureenergysolar.com
 

352 377-6527 Office
352 336-3299 
Fax
352 316-1637 Cell
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From: bob-o at electronconnection.com
Date: Tue, 31 May 2011 15:40:14 -0700
To: re-wrenches at lists.re-wrenches.org
Subject: Re: [RE-wrenches] 24 volt Battery Bank comparison



Wayne,First, let's hope you mean 12 of the 2YS31. A single battery string is always preferable to multiple strings in my book. The only downside is interconnect cables the same size as your inverter cables. That probably means 4/0 CU for most 24V, 3KW and up inverters. Two strings in parallel-not too bad. Three strings- as far as you want to push it. More strings- Don't go there.Bob-O
On May 31, 2011, at 2:49 PM, Wayne Irwin wrote:Hello Esteemed Battery Gurus,

Which of the following do you believe is the better 24 V battery bank?

A) 13 - Rolls 2-YS-31 2430 AH @ 20 HR (one string) 

or 

B) 9 -  Rolls 8-CS-25P 820 AH @ 20 HR (3 strings of 3)

Thank you in advance for your input!


Wayne Irwin, EE
Director of Engineering
Pure Energy Solar International Inc. 
State Licensed Solar Contractor
License # CVC56695 
Wayne at PureEnergySolar.com 
http://pureenergysolar.com 
352 377-6527 Office
352 336-3299 Fax
352 316-1637 Cell
The content of this message is Pure Energy Solar Confidential. If you are not the intended recipient and have received this message in error, any use or distribution is prohibited. Please notify me immediately by reply e-mail and delete this message from your computer system. Thank you.
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