If you still have not bought a battery you may just want to keep checking the classified ads on different sites the one on western bass usually has lots of new stuff posted every day. I have bought alot of stuff from guy's off these things and have never been gyped alot of people are worried about that. If your in no hurry that is probably the cheapest way. Also I belive the smallest trolling motor I have seen NEW is 30lb although they do have older ones that are like 10-25 if you look at yard sales you could probably get one of these cheap?