[RE-wrenches] 24 volt Battery Bank comparison

[Brian Mehalic]

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 <james at 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 <wayne at 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
> Wayne at PureEnergySolar.com <PureEnergySolar at hotmail.com>
> http://pureenergysolar.com <http://pureenergysolar.net/>
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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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