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Join Date: Jun 2009
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Re: Dedicated Starter Battery or All Deep Cycle
You can find lots of threads on this from people far more knowledgeable than me, but I have read them all, and I would only use one of two options for a small auxiliary sailboat with no generator and no electric windlass.
1) One bank of deep cycle batteries you use for everything. Keep things simple and just have one bank. Use it for everything. The only downside of this is if you somehow discharge your bank deep enough to not start your engine, you would need outside help. This is of minor concern if you are reasonable conscientious, staying in the US, and have towing insurance.
2) One bank of deep cycle for the house bank, and a single cranking battery for starting the engine. This is the option I use, just because we wander off the beaten path again. It is more complicated, and more expensive to install, but worth it to me for the extra safety. I have never actually needed this yet, but might someday. Probably not.
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