Only time I have heard of having to run a cranking type battery is on the older Mercs. I had a 1984 150 Black Max that I had to use a cranking type battery. I am having trouble see what a AGM starting battery would hurt running it on an alternator w/ regulator. I ran a Optima trolling 1000amp battery on my suburban for over 10 years. Never had to put an alternator on it neither.
ï¿½The world will not be destroyed by those who do evil, but by those who watch them without doing anythingï¿½ Remember what He has done and remember that He is not done yet! GOD IS GOOD