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Old 09-10-2013, 12:07 AM   #1
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Adding a second house battery

Question to the vets

Adding a second house deep cycle battery.

Currently I have one with room for one more under the step. My unit is a 2014 Sunseeker 3170ds

Anyone have any recommendations ?

We will be traveling from coast to coast soon and will looking to have all my bases covered. Thanks for the input in advance
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Old 09-10-2013, 09:49 AM   #2
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I am not quite sure what you are asking. Are you looking for a recommendation for a specific battery?

When putting two batteries in parallel, it is best to have them as close to identical as possible. That means the same style and model, from the same manufacturer, and the same age. You won't be able to match the age of your existing battery, but if you can get an otherwise identical battery, that is the thing to do. If not, you will be better off with two new ones.

If you do go with two new ones, consider using 6 volt golf cart batteries in series. Trojan, US Battery, Interstate, and some others have 6V batteries rated at around 220 to 240 amp-hours, and also some larger ones, but the larger ones get pricey.

Joel
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Old 09-10-2013, 10:55 AM   #3
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Thanks Joel. That was what I was looking for. Ok so run as close to identical batteries as possible.
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Old 09-10-2013, 11:02 AM   #4
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X2 on matching your batteries as much as possible.

Chris - this should also help you. It covers the basics but also some more technical items. Its not perfect, but a very good read.

Forest River Forums - Downloads - 12 volt side of Life
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Old 09-10-2013, 11:07 AM   #5
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Thanks. I am just driving my Sunseeker to the dealer today. Only a few miles from me. They quoted me $160 to match up and install a second battery. That's cheaper than buying one new off Amazon and installing it myself

I will read that Scott. Thanks.
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Old 09-10-2013, 11:15 AM   #6
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Quote:
Originally Posted by Chrisbrock View Post
Thanks. I am just driving my Sunseeker to the dealer today. Only a few miles from me. They quoted me $160 to match up and install a second battery. That's cheaper than buying one new off Amazon and installing it myself

I will read that Scott. Thanks.
Since you have a 2014, the battery must still be pretty new. Having the dealer add the second battery of the same type is exactly what we did when we picked up our new trailer. Its the cheapest option, and doubles your reserve capacity. There are some good arguments to go with the 6v batteries, but that makes a lot more sense when you go to replace your batteries. If you already have one new battery, matching it with a second is the way to go, I think.

We've been pleased with the extra capacity, and there are some good threads on here about maintaining and charging hour batteries to maximize their life.
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