Any "practical" advantages to a dual battery setup? - Jeep Wrangler Forum
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Old 08-03-2014, 02:31 PM   #1
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Any "practical" advantages to a dual battery setup?

One of the mods that's intrigued me for a long time has been a dual battery system. In the truck I had before my JK, I had two battery failures......once in the middle of nowhere, which required a long walk to get help (no cell service, of course).

So I get the "emergency preparedness" part of it...but that's a significant chunk of money just for a "what if?" scenario.


So what I'd like to know is are there any everyday advantages I'd get from running such a setup? Longer battery life would be great....especially since everything I've read says you need to use batteries that are roughly the same age. I'd hate to add a mod that no only had significant upfront costs, but also doubled the money I was spending on batteries.

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Old 08-05-2014, 12:01 PM   #2
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depending how you wire them

winching
welding
self jump
longer drive time if alternator fails


Dual battery/isolated batteries/winch/welding - JeepForum.com

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Old 08-05-2014, 09:52 PM   #3
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Why do you have 5 tires for a vehicle that only has 4 wheels? What's the practical everyday advantage to that? You're driving down the road with $200+ dollars of unused tire/wheel on the back of your Jeep - just in case you might need it. But, we all hope all the while that we may never be inconvenienced with having to deal with a flat or blowout.

If you are one to not want to have to walk miles to get help because your battery failed, then a dual battery setup is it's own everyday advantage - just like having a spare tire.
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Old 08-09-2014, 08:45 PM   #4
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Quote:
Originally Posted by NonRubicon View Post
Why do you have 5 tires for a vehicle that only has 4 wheels? What's the practical everyday advantage to that? You're driving down the road with $200+ dollars of unused tire/wheel on the back of your Jeep - just in case you might need it. But, we all hope all the while that we may never be inconvenienced with having to deal with a flat or blowout.

If you are one to not want to have to walk miles to get help because your battery failed, then a dual battery setup is it's own everyday advantage - just like having a spare tire.
I get your point, but a spare tire can fall into the normal tire rotation anyways, so it doesn't really have to be "unused"

As I'm understanding it, running a dual battery (without some specific reason like the ones previously mentioned) would be like running a dual set of tires in addition to your primary set.

I'm not knocking the idea....I think it's really cool, and makes sense for those who need the extra juice. I just don't know if its a practical set up for me.
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Old 08-10-2014, 08:24 AM   #5
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If you are not running accessories like a fridge, super stereo, etc., when the motor is off, then you probably do not need dual batteries...unless you are just looking for something on which to spend money or wishing to mod for the sake of modding. I run dual batteries because of the fridge that is in the jeep 24/7...and because I don't want to be stuck in the middle of the wilderness with a dead battery. But carrying a jump starter solves the stuck problem as long as you keep it charged.
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