[RE-wrenches] Sunny Island DC Load Centers, Sealed Batteries

[Darryl Thayer]

good luck, be careful not to parallel the sealed batteries, the steeper temp/voltage curve increases the possibility of thermal runaway. C&D makes a good sealed battery, check with battery services group, or C&D also Trojan makes smaller sealed batteries.  I like Outback because of the battery monitoring/control capability of the FNDC.
Darryl   

--- On Wed, 10/7/09, Kirpal Khalsa <solarworks at gmail.com> wrote:

> From: Kirpal Khalsa <solarworks at gmail.com>
> Subject: [RE-wrenches] Sunny Island DC Load Centers, Sealed Batteries
> To: "RE-wrenches" <re-wrenches at lists.re-wrenches.org>
> Date: Wednesday, October 7, 2009, 8:14 PM
> Hi Folks......we have an upcoming Sunny
> Island/Sunny Boy AC Coupled system installation.....We have
> mostly done Outback and Xantrex battery based
> systems.......and like the available supporting DC load
> centers with main breakers and other DC load and charging
> breakers......
> 
> What are folks using for the Sunny Island products? Outback
> Flexware DC 500's? or 1000's?
> This particular system will consist of 4 Sunny Islands and
> therefore will need four main breakers......  We primarily
> need a breaker box to locate our main DC breakers coming
> from the battery bank.......Any advice, experiences would be
> appreciated......
> 
> 
> Also on that note.....anyone wish to share any experience
> or advice on the GNB Absolyte GX series batteries or the
> East Penn Deka UnigyII as a standby grid connected back up
> battery bank....They both seem like they are good for
> primarily hanging out in float with occasional deep
> discharges not negatively affecting the health of the
> batteries.....This is the type of service we expect the
> batteries will be in primarily......Any recommendations of
> one brand over the other.....The vertical stacking seems
> convenient as far as space is concerned.....maintenece
> free......any recommendations on a good supplier on the west
> coast?  Any other brands i should be looking at in the
> sealed battery category for a fairly large Ah battery bank?
> 
> 100 thanks !
> -- 
> Sunny Regards,
> Kirpal Khalsa
> NABCEP Certified Solar PV Installer
> Renewable Energy Systems
> www.oregonsolarworks.com
> 541-218-0201 m
> 541-592-3958 o
> 
> 
> 
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