> This is original. Would you have a link to something > that explains the theory behind this? The theory is that the freezing/thawing breaks up the crystaline structures that have formed in a degraded cell. The guy said he had much success with NiCd cells in the past, and his first attempt with a LiIon pack appeared to do the trick as well. (That's the limit of my knowledge on the subject, don't ask me anything about cell chemistry etc). Now the link to this theory: http://www.read.up.six.lines -- Brent Brown, Electronic Design Solutions 16 English Street, Hamilton, New Zealand Ph/fax: +64 7 849 0069 Mobile/txt: 025 334 069 eMail: brent.brown@clear.net.nz -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu