The sump pump bank took about 10 hours to go through the standard bulk/absorption phase, which is understandable considering it has a 4.3A charge capacity and the bank is 240AH. But it's also surprising because the old 3-stage 6A charger had been on full time. It was in float when I switched on the "recondition" setting this morning and it was running at the higher voltage last time I looked a few hours ago. I expect it to be on float again when I return. Will check water level again at that point.