icarus wrote: »
So if you have been off grid since '03,, are you still on the original batteries? If so,, with the usage pattern you describe I think you are doing pretty well. That is something like 2500 cycles to 65% soc. Not too bad. The concorde site suggests that at 40% dod, one should expect ~1500 cycles. (20% dod should yield upwards of 3000 cycles,,, 5000 at 10%).
"HELP! Can someone please stop my head from go'n 'round in hot laps...
Even if I were to go with a 48 volt system, using 3 strings of 8 305ah AGM Concordes, i'm still only coming up with a 915ah battery bank. It would take 4 strings to match the AH's that I had previously. 3 strings of 8 are about $8,000."