mark.curry3
100 W
I have a 20s 14p 72v nominal (84v) battery that came in a sealed case that somehow got water inside. I took it apart and cleaned it up and re-welded the loose tabs but one entire string reads 0.0 on my meter. Is it possible that all 14 cells died? is there another cause, maybe a single cell I should look at? the other cells seem fine and the entire pack shows 77.6v with most strings at 4.1 and a few at 4.0v, Is there a way to test the cells other than trying to separate them(they are spot welded)?