Re: E-Tec Battery size
Shouldn''t be any different than any other engine of the size. Since you are in a marine environment and have a lot of pounding, I think you should buy a battery made for it; hence a heavdy duty.
But if a regular battery is less than half the price of a hd one, then you can wear out 2 of them B4 you spent the money you did for the hd one....so I'd buy a regular automotive batt.
AH capacity? The engine is only going to use 150 amperes to crank and you aren't going to be on the starter for more than 30 seconds to a minute. A size 24 650 cca should work fine. I said this to keep your weight down. If your engine's alternator is doing it's job I don't see a problem...................unless you do a lot of power consuming when the engine's off, like running a stereo full blast or S-S radio's or something. Then I'd go to the 27. and get on up to 850-950 cca.
Mark