I ran my Sullivan starter on 18 volts last summer. Cheap pac from Harbor Freight that worked fine until one cell died. Be sure to add a fuse or suffer the impending melt down from a short or stalled starter. I let someone borrow my set up and learned the hard way. This year I am experimenting with a 19.2 volt 2a pac. This set up spins my Zenoah G26 like a 1/2A motor. No smoke or funny smells yet!
