Lead Acid Battery - 2 Cells No Float
So I picked up a new (to me) rig from family last weekend. It had been sitting at the BIL's place for several years. He started it occasionally, but never kept it plugged in. 2 of the 3 group 29,...
Forum Discussion
BFL13 wrote:
In the 5er with all incandescent and all fans I could do about 25a DC as a load. Four hours would be 100AH (but the lamps do dim as voltage comes down drawing fewer amps)
As mentioned earlier, the resting voltage can collapse under load with a duff battery. Not clear if the two "good ones" did that. IMO charge them up and do it again to see if just those two collapse.
You read my mind, Carnac.
100 Ah over 4 hours is a pretty hard draw. 5 times as hard as the 20 hour rate. So maybe that could have something to do with it.
EDIT: Having trouble finding a 5 hr Ah rating for Interstates, but Trojan's T-1275 has about 80% of the 20 hr rating at 5 hr (120 vs 150.) So certainly significant.
Also... the fans and lights may have still been running, so that voltage may not have been resting.
Looks like I have some testing to do.
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