I have a Sun 60v battery on my custom ebike, its one of those box shaped shaped batteries with what I call bag cells inside, sorry for the weird discription. Anyway, it won't charge, charger checks out OK so I checked each cell and one feels soft whereas the others are firm. The soft one is only reading 1 volt and all the rest are about 3.5v each. I've removed the bad one from the pack plus one more to get the tabs to line up. Is the BMS still going to work with the 2 cells removed?