If it's "survival mode" only, why do you need 1,200 cycles?! How many hurricanes/tornados/riots are you getting around there? :)
The S-460 is a great battery, but it's rated for 1200 cycles to 50%. I don't have a cycle curve handy, but you can probably expect about half the cycles at 80% DOD. Based on the price, it looks like you are talking about 8 of the S-460's for 350aH @ 48V. Maybe go to 8 of the Concorde PVX-2580L and use a 50% DOD factor instead. I'm not sure how that compares to the GNB price for the same capacity. That also gives you the option for occasional deep discharges to 80% DOD. The point is, it might be cheaper to increase capacity and decrease DOD than to buy a "higher quality" battery that can handle more cycles to 80% DOD. Jason Szumlanski Fafco Solar Cape Coral, FL www.FafcoSolar.com ---------------------- Date: Thu, 16 Sep 2010 11:28:39 -0500 From: <hol...@sbcglobal.net> To: "RE-wrenches" <re-wrenches@lists.re-wrenches.org> Subject: [RE-wrenches] Surrette AGM's Message-ID: <8f9976ae8b824fd3ba899e857c202...@holtpc> Content-Type: text/plain; charset="iso-8859-1" Getting a few "survival mode" system requests...and of course they want "no maintenance" battery bank.....I have to smile when I see them flop around on the floor when I show them the GNB Absolyte pricing......Surrette's ain't that much cheaper (about $2000 in this case).... any one out there spec'd the S-460-AGM that can give me some feedback?...looking for GNB- like performance (1200 cycles @ 80%dod tested) for just a bit less money (or am I just imagining those are oinking noises coming from above?) Holt E. Kelly Holtek Fireplace & Solar Products 500 Jewell Dr. Waco TX. 76712 254-751-9111 www.holteksolar.com _______________________________________________ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
