Brock,
Well, I'd say they were seeing about 40 amps (+ or - 5, via auto amp meter). The thing is it has been really hot here in Arkansas and I'm wondering if that's got something to do with the problem, however this has not been a problem in the past. We've been off grid for going on 5 years. I'm drving a 100 amp Mopar, externally regulated via resistance alternator, so the rate is constant. I've used this system all along. I also have 4 BP75watt PV's and a morningstar controller. I unhooked my wind system thinking maybe the blocking diode was shot. Maybe I should check out the solar controller.
About 3 weeks ago I did my monthly service. Topped up the acid with distilled water, or it was labeled so. I thought I was pretty cautious about the fill level, but maybe I put too much in. Think that could be it? I stopped at the ring, where I always filled to before, and none seemed to take much, maybe an ounce or so each.
Anyway I've NEVER had to run the system for more than 6 hours, but then again the voltage was never down to the inverter cut-off of 10.5 before. I'll know more when I get home tonight and read the voltage.
Thanks,
RogerAS