first I am confused 12 each at 2 volts is 24 volts, also I always like one
string over two, I have experianced a battery fire with 4 strings in parallel.
________________________________
From: Brian Mehalic <br...@solarenergy.org>
To: RE-wrenches <re-wrenches@lists.re-wrenches.org>
Sent: Tuesday, May 31, 2011 5:24 PM
Subject: Re: [RE-wrenches] 24 volt Battery Bank comparison
Hi Wayne-
While I think a lot of folks will agree that a single string is better for the
long term health of the batteries as it results in more even charging, I still
like the idea of at least two strings. That way if a single battery fails,
that string can be removed and the end-user can at least get by on half of the
pack until a replacement can be installed.
Brian
On Tue, May 31, 2011 at 10:19 PM, James Surrette <ja...@surrette.com> wrote:
Hi Wayne,
>
>I look forward to the input from the wrenches.
>
>My recommendation, regardless of the brand, would be for one string.
>
>Regards,
>
>Jamie
>
>>>> Wayne Irwin <wa...@pureenergysolar.com> 5/31/2011 6:49 PM >>>
>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
>wa...@pureenergysolar.com
>http://pureenergysolar.net/
>352 377-6527 Office
>352 336-3299 Fax
>352 316-1637 Cell
>
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--
========================
Brian Mehalic
NABCEP Certified Solar PV Installer™ R031508-59
IREC ISPQ Certified Affiliated Instructor/PV US-0132
PV Curriculum Developer and Instructor
Solar Energy International
Carbondale, CO 81623
http://www.solarenergy.org
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