I think I made a big error assuming I could use four batteries to replace a massive materials lift battery. It's okay to be ignorant as long as you are aware of it. I am aware of it. So, I said this materials lift walk behind was 24v, 174A. Well, no. The 24v is right, but what the battery label actually said was "5h capacity: 174Ah". In my first post, I proposed using two sets of 2 12v 100A StopStart batteries in parallel/series to yield 24v 400A. Can anybody tell me what kind of run time I might get with that? I have no idea how it compares to the capacity of the original battery.