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No, they were something I purchased from west marine. (Sea Volt brand I think). Over all they were fine for a couple of years but that one time I really discharged it to zero (by accident) the house battery was kaput after that. I bought it back and they tested it, and the machine just said "error" and it was a few weeks after the warranty expired (figures), they were group 27's. I replaced both of them (and sold them with the boat) and I still have the other old one and it is still very strong. One thing I learned that the output from most outboards alternators is not that great unless your running 5000rpm.
I am boning up on my marine electrical. I see a lot of things I want to change/add. I want to change the way the battery wiring /switches are laid out. I don't see the logic in the current layout. If I get in over my head I will bring it to an expert but I think I can straighten it out. I like doing it myself if I can this way I understand the inner workings if (when) something breaks.
A buddy told me once...in general buy batteries by weight: heavier= better. I like the theory behind AGM's I think they make the best sense for boats. However in the past there were two types of batteries: Deep Cycle and Starting. I understand they differences but the new AGMS are " Dual use", Both deep cycle and starting. There must be some advantage one way or the other I would think. Is a classic "starting battery" better than a "dual use" battery for starting and engine?
Last edited by Mr. Sandman; 12-09-2009 at 09:06 AM..
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Hybrid Mode
