Dave S - I know your delema and offer this. Just run a cycle on the individual cell if you have a T-30 or something that can cycle it. I had a nicad do that. It would take a charge, however. It eventually started to pick up voltage and it has been fine ever since. As I see it, you don't have anything to loose. It may take 10 minutes to get it to come around, but I think it will. Charge at 6 amps with a cutoff of .06. Run it a couple of cycles and if it comes around, cycle it with the rest of the batteries to make sure. If it doesn't come back from that, next try zapping it. Good luck.