> Use a higher capacitance if you get that far and they're still not blown. > If 20V and 10mF doesn't work there is little point trying to salvage > the battery I've tried 10,000uF and 15V. Sometimes it revives a cell, sometimes it doen't. I'm surmising that if a cell has grown multiple whiskers the zap will take out the weakest. At the first go anyway -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist