Anyone have an idea of what my problem might be? For some reason my motor (150 Merc) after a while out on the water just won't turn over, I've replaced batteries, charged them, checked the cells and even switched my trolling motor battery out on the water to try to get the engine to turn over but it just wouldn't. What I don't understand is how after hooking that battery back up to the trolling motor, I still had enough power to use it for bringing us back the mile or so to the ramp, but it wouldn't turn the engine over. Can't figure where I'm losing the power, is it my on board charger might be faulty? Solenoid? Starter possibly? Short in the wiring? Actually in a way it's kind of funny, last two Midwest C.O.D. tourney's we've had fish to weigh and weren't able to make the weigh in because of it. Guess if I have to see the humor in this, that's the place to look.