I am planning to install a separate house battery on my 26' boat. I currently have one starting battery which has the necessary 800 CCA for starting the motor (225 hp Honda). I would prefer to have 2 batteries: 1 starting and 1 house.
I have noticed many house batteries only have 600 CCA. Is this enough to start a 225 hp motor - at least to rely on as a backup? Probably a stupid question, but it's easier to ask than to purchase and install to find out.