I just got it last week, but it was the last one he had. Said he had got the cells at a very good deal, and most likely wouldn't be able to get them again. So, it's possible he may have had the pack for a while. The cells it's made from are on this page, about in the middle:
http://home.comcast.net/~truerc/prod.htm
Just look for the 8000's.