Author Topic: Running two Batterys  (Read 360 times)

Offline sedge1080

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Running two Batterys
« on: August 05, 2017, 09:52:15 PM »
Time to buy new batteries for the TJ, currently I run dual batteries, one for normal jeep accessories and startup, the second for the Winch and minor accessories. 

Being that I already have the isolator wired, double battery tray, ex...  should I stick with twin Interstate batteries, or should I drop down to a single and run a Redtop?  Price for one vs two is close enough to a wash.

Is two batteries worth it is the biggest question
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Online JeepinMaxx

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Re: Running two Batterys
« Reply #1 on: August 05, 2017, 10:22:41 PM »
Personally I've run a Red Top and Yellow Top Optimas on my YJ with a winch for over a decade and my new to me TJ has a vintage Optima Red Top that handled winching up the OFR ledge fine. 

I've always wanted to go dual batteries (because of hearing the Draz-Catrini trip back from PA with no working alternator)  and I'm a prepper and like spare parts with me "two is one and one is none"

If you already have a dual battery setup - go with it, If not - get a single AGM battery and sell me your dual battery set-up for my TJ  :wink:


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Online MattG

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Re: Running two Batterys
« Reply #2 on: August 06, 2017, 01:02:49 AM »
I'd run a single AGM battery personally

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Offline YJScrounge

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Re: Running two Batterys
« Reply #3 on: August 06, 2017, 06:28:58 AM »
Look at the difference of RED and Yellow Top Optima. Red is really for high-torque starting. Yellow consistent power/drain. I went with yellow for winching. I guess my choice could be debated.

I was going to go dual and frankly got lazy and didn't do the under hood mods.

Also, Johnson Battery claims they resolved the quality issues with Optima sine acquiring them. I also went with Optima as they are readily available at Autozone and Advanced. Both stores are generally available where we wheel...
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Offline King of the Hill

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Re: Running two Batterys
« Reply #4 on: August 06, 2017, 07:56:13 AM »
There is an Interstate Battery store/shop on Homestead Avenue in West Hartford I drive by every day.  They have great deals on referbs if your willing to go that route.  I have purchased a few of them and never had a problem.  The guys are great to work with.  I usually just go in with dimensions I am working with and just ask them for the biggest CCA battery they have that will fit in the hole.
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Re: Running two Batterys
« Reply #5 on: August 06, 2017, 08:55:34 AM »
Single Odyssey.  :mrgreen:  I've had mine for more than 8 years!
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Offline markus68

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Re: Running two Batterys
« Reply #6 on: August 06, 2017, 09:25:45 AM »
wow,,I'm just running the stock battery...i better check into this

Offline bigdaddymack51

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Re: Running two Batterys
« Reply #7 on: August 07, 2017, 05:59:47 AM »
I just installed a yellow top and the 10+ yr. old red top came out.  Single batt. in my CJ.  I was so glad and nervous at the same time , as The alt. belt broke this past weekend on OFR also.  Was able to not only drive out of there , but locate a parts store in N.Adams and get a new belt. Being new , I knew I had enough juice to make it without hurting the batt.   With twin batts. you still have 12 volts , just double the draw amps .   I also have a 140 amp. alt to help the batt. handle the needs of recovery , daily usage , and the winch.  High amp alt or twin batts. Your choice .    FjR68

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Re: Running two Batterys
« Reply #8 on: August 07, 2017, 07:39:54 AM »

 I ran dual yellowtops with the high output Alt.  I didn't run an isolator, just a couple link cables.

 AFAIK, they are still in the Jeep (They were when I sold it).
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Offline Johnny Cupcakes

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Re: Running two Batterys
« Reply #9 on: August 17, 2017, 01:49:50 AM »
Yellow in my junk pile too