I think your a little out of the luck some soldering is required wether it be directly to the battery or to metal tabs its the best way to insure a good connection. If you still wanna try to attempt the dual cell mod you could follow the directions but instead of soldering try using elecrtrical tape. I dont recomend this though her is a link for directions
http://foy.foy.com/minircmod/moddocs...attinstruc.htm
hope this helps