just about any 2200 mah pack will spank a small lead acid battery. i have the finer edge makita adapter on a dynatron and it will spin any 35cc gasser. it is expensive but nice. if i didnt have anything but the starter i would probably just put a xt60 connector on my starter and grab any 3-6 cell lipo i had with me to power it. a sullivan will handle 24v. i wouldnt spin it all day but for most starting it will handle it..