I looked at the batteries at Wallmart tonight. The Everstart deep cycle battery that was around $70.00 had specs of about 720 CA and 115 AH. (can't remember exact specs) I'd assume a couple of these should do the trick for the time being. I'm not expecting them to last too long so I'm not worried about the quality of the batteries themselves right now. I'd be happy if I could get 4 or 5 hours out of them per day on the water with moderate use of the trolling motor.

Drew