i have a pair of integy 55t lathe motors. they say they're good for 6 cells (each motor), and a single 2s2p pack will make it move well. but i wanted the extra 'pop' and torque of 4s2p.
(if i'm going to do it, i may as well do it right! right?)
unfortunately i can't do 4s1p with the packs i have. i have two 2s2p packs and two 3s1p packs. i could always go with a single 3s1p, or..... GULP... try 5s2p! woo hooo!