i think i have already answered my own question, but here it goes. i want to see if i can use 2 li-ion packs with regulators with the power expander. by what i can tell i just have to by deans connectors to make this work. i can put each battery on a separate power terminal on the one end of the expander. has this been done? and are there any problems doing this? thanks for the info. toby....