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Old 11-17-2008, 01:04 PM   #1
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Dual Battery Setup

Hey Guys

Anyone ever seen a dual battery set up on a RHD TJ? I would like to put a couple of Optimas in for use with my fridge.

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Old 11-17-2008, 01:46 PM   #2
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That sounds like a cool set up. You can buy double layer battery trays.

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Old 11-17-2008, 02:19 PM   #3
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Dual battery

I put in this kit:

Wrangler NW - Dual Battery Tray Kit for Jeep TJ, Rubicon & Unlimited 4.0L 6cyl only w/o air conditioning 1997-2006

Works great. Both are always on charge but you can set -on the fly - to run individually or in series. I set one up for the starter/main power circuit, the other for accessories and run them independently. If the starter battery gets run down (say by leaving on the lights) just hit the switch and the back-up is ready to provide power.

Working in serial also helps with high draw applications like winching.
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Old 11-17-2008, 02:40 PM   #4
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To clarify a minor thing in ebuck's post, he means he can run his batteries "to run individually or in.... parallel." They're not run in series which would produce 24 volts. It's when they are wired in parallel with each other that helps in high amperage draw devices like winches.
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Old 11-17-2008, 03:21 PM   #5
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Old 11-17-2008, 06:06 PM   #6
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Here's the setup I did a while back. -> Click Here <-
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Old 11-17-2008, 07:49 PM   #7
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Originally Posted by Jerry Bransford View Post
To clarify a minor thing in ebuck's post, he means he can run his batteries "to run individually or in.... parallel." They're not run in series which would produce 24 volts. It's when they are wired in parallel with each other that helps in high amperage draw devices like winches.
Man, that explains all those blown fuses
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Old 11-17-2008, 09:15 PM   #8
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If it has AC the AC drier is probably in the way for side-by-sides.
I found room a little ahead of the stock battery location - room for a small tractor battery.
It's strong enough to use the winch, and certainly strong enough to to start the engine several times if the main batt is run down. It's just not as powerful as a regular battery.

You have to build a tray for it, but that's no big deal.

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