John has a nice webpage up on the A123 Cells.
http://www.terrorhurtz.com/a123/http://www.terrorhurtz.com/a123/
also more info here...
http://www.first-products.de/specsenglisch.htmhttp://www.first-products.de/specsenglisch.htm
here...
http://www.flyelectric.ukgateway.net/lithium-a123.htmhttp://www.flyelectric.ukgateway.net/lithium-a123.htm
and here..
http://www.slkelectronics.com/DeWalt/anecdote.htmhttp://www.slkelectronics.com/DeWalt/anecdote.htm