OK guys I think I need a new battery for my trolling motor. How long should my battery last while running my PowerDrive V2 with I-pilot? it is a 12volt system. it only lasted about 4 hours yesterday on the lake. It started great but after 3-4 hours it was showing no signal on the control and non of the features would work. I checked all of my connections and everything looks good. If I need a new battery is one better than the other? I have heard of using deep cycle golf cart batteries? Thanks for the help!!!