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Old 05-29-2015, 11:55 PM   #1
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Winnebago Owners Club
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RV Batteries

I got two new batteries to run the rv power without messing with the engine battery but i'm confused how they are supposed to be hooked up and everything... ???

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Old 05-30-2015, 04:00 AM   #2
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I would need more info to help. Not familiar with your coach config.

Are they 2 new 6 volt batteries for coach power? And you have separate chasis batteries?

Or are they 2 new 12 volt batteies for the chassis?


2008 Thor Mandalay Presidio, 400 ISL
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Old 05-30-2015, 04:46 AM   #3
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Using numbers where possible google Twelve volt side of life

(use number 12)

Depending on of you got the right or the wrong batteries thy will be hooked in series or parallel.. The document explains better and easier than I can.
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Old 06-01-2015, 09:29 AM   #4
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Are you replacing existing batteries with the same type of battery? If so, it should be a straight-forward swap: make careful note of the existing connections before removing the old ones, then make the same connections when putting the new ones in.

If not replacing existing batteries, we're going to need a lot more information...

In either case, ALWAYS disconnect the negative lead first, the the one that runs from the batteries to the chassis, and reconnect that lead last. That's the safest procedure. If have that negative lead connected, and are wrenching on a positive lead, accidentally touching the wrench to any exposed chassis metal could cause a short with hundreds of amps of current. That can cause sparks, burns, and in the worst case it can weld the wrench in place until the wrench melts or the batteries explode. Safety first: don't wrench on any other connections while that ground connection is in place.
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Old 06-01-2015, 09:33 AM   #5
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Lot of info on this page.

The 12volt Side of Life (Part 1)
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Old 06-01-2015, 10:52 AM   #6
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If this coach used to share the chassis battery for house duty too, you may find you need a few more components to set things up. Good reading in the 12 V Side of Life!

You might also post under the Winnebago Owner group too, and check with owners of the same model to see how they may have approached this??

Best of luck,

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