ORIGINAL: Rodney

One of the NASA studies showed that the best way to do long term storage on NiCad was to discharge each individual cell to zero volts using a slow discharge. Then a shorting bar was attached across each cell and then they were stored at a low temperature. I do not recall what the recommended temperature was but I think it was slightly below 30 degrees F. When ready to use them, let them warm up to room temperature and then give them a long slow charge.