What about the new Surrette FC420's? The latest SOLARPRO mag has a tiny blurb on them at the bottom of page 28. Two sets in parallel (630 a/h) would meat your criteria and would perform much better than sealed batteries.
I have been beta testing a set here at home and they seem to be doing fine. I hope I get 20 years out of em. Todd On Wednesday, November 26, 2008 8:57am, "Chris Worcester" <[EMAIL PROTECTED]> said: With two SI5048’s sucking on this battery bank there is the possibility of some serious current transfer taking place. We are proposing an absolute minimum battery size that can go full load draw down for three hours, to 50% DOD, my inclination is to make this 6 hours. At 3 hours we would need a 500 amp hour battery. What are others doing about battery sizing in this scenario? (our client hasn’t revealed what loads he wants to back up unfortunately so we are approaching this in this manner)
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