[jhautz]

I personally wouldnt mix the 2. Its very likely that even if the cells are from the same factory that there could be some sort of difference in the pack construction that would make them discharge slightly different. Thats all it would take to ruin one or the other. when mixing packs its not even a good idea to take an older pack and mix it with a newer pack as you sugested in you first email. As they age they will change capacities and discharge characteristics and a new vs old will not really be the same any more.