Yeah, I use a 20lb thrust motor for my 12' alum. boat, and it works pretty well. But when the wind comes up! Well, that's another story. I wasn't sure if I should get the Marine battery, but it really wasn't a lot more than the standard 12V, and it works great. I run my night running lights, and my motor with it, and it will last me 2 days worth of fishing. I think just for the fact that it will recharge more, is well worth the extra $ spent. Hope this helps.