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Adding Second Battery


moodys

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I know there is some info on adding second batteries but I am trying to figure out what I need to do in my situation.

My new to me '01 Sunsetter VLX has a single starting battery. My boat sits on a AirDock at the lake.

Currently everything is wired on to the one battery. It has one set of thick wires black and red connected (I assume for the engine) and a second set of thinner black and red wires connected (I assume for everything else) Am I correct in thinking that?

I need the bilge pump to be able to come on at all times.

Should I add a regular Perko 8501 switch and get a deep cycle battery. I would then attach the small wires to deep cycle and the large wire to the starting battery.

OR

Would it be smarter to get the Blue Seas add a battery with the auto switch? Is it really needed?

Would really appreciate some advice or info from anyone that has done the same thing. The only other thing on my boat is 1 amp for the tower speakers. Everything else is stock.

Thank you in advance for any and all help.

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Not yet in my new boat, but yes in the old one. I do plan to install it over the winter. Yes, I did it myself.

You will need some additional power wire in addition to the kit. Great Lakes Skipper has the best prices I've seen. I used genuinedealz.com, which also has pretty good prices and great service.

My install thread here: One thing I would change about how I have it laid out in the diagram in the thread is to put the wires to the acr on different posts than the batteries on each side of the switch. That way if you hook up a charger to one battery with the switch off, the acr won't combine the batteries.

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  • 4 weeks later...

shawndoggy,

Thank you for the advice!!!! I am going to try over the winter as well.

Thanks again.

Not yet in my new boat, but yes in the old one. I do plan to install it over the winter. Yes, I did it myself.

You will need some additional power wire in addition to the kit. Great Lakes Skipper has the best prices I've seen. I used genuinedealz.com, which also has pretty good prices and great service.

My install thread here: One thing I would change about how I have it laid out in the diagram in the thread is to put the wires to the acr on different posts than the batteries on each side of the switch. That way if you hook up a charger to one battery with the switch off, the acr won't combine the batteries.

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