I just got back from a fishing trip with my new to me boat motor. It is a Mercury 2006 60hp four stroke. I had lots of trouble with running the battery down. My battery is an optimax that is only a year old, I purchased another agm battery from bass pro during the trip and had the same problems with running the battery down. I also was running my fishfinder the whole time on the trip, a lowarance hds -7 with the structure scan. We were trolling 90% of the time, so with the motor running the whole time I would think the battery would have stayed charged. The engine ran fine, the fish finder worked great, my trouble was only with running my battery down. What direction do I need to head in? Thank you