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Old 11-29-2018, 09:05 PM
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89 battery size issues

Hey guys,

Nothing seems to be simple on my YJ. So the battery that is in the Jeep currently is about 2 years old but because it hasn't been driven much, it seems to have deteriorated (sulfated?) to the borderline "good" level as my local shop determined by testing. With winter coming, didn't want to take a chance so sprung for a new battery at Chrysler (group 34 size, 700 CCA). Brought it hom to install and it wouldn't fit. It was about 3/8" too wide to fit between the tray holdup bars. Maybe can't use the Chrysler battery. Can anyone recommend/advise which battery I should get to fit with at least 700 CCA and decent quality? It currently has a "Survivor" battery (I think it's made by BESA) which fits quite nicely (about 6 and 1/4" wide vs the Mopar 6 and 5/8"). Just not sure of the quality of this and only 630 CCA. Thanks if anyone can tell me so I can start it up again.

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Old 11-29-2018, 09:42 PM   #2
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I put a group 34 with 800 CCA's in my 94 with no problems at all




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Old 11-29-2018, 10:27 PM   #3
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As with many things in life, you get what you pay for. Batteries are one of those things.

Go online, read the reviews. Buy the best battery you can afford. If you can't afford a top of the line, buy a cheapo and save up for a good one. Even a cheap battery will have a 3 year guarantee.
I keep a battery tender on everything that doesn't get driven daily or almost daily. My 2010 RZR has the original battery.

My Jeep is a DD, but the battery is dated 06/13. Saturday is the first of December and winter is upon us. Rather than wait until I have to jump my Jeep some cold snowy morning, I'm going to replace the starting battery in the next couple days (winch battery was just warrantied this summer).

Good Luck, L.M.
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Old 11-30-2018, 09:16 AM
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Yeah, I've used the Chrysler battery in our Town and Country with great results so was sticking with it for the Jeep but the group 34 (which I believe the Jeep calls for) was just physically too big to fit on the tray or squeeze through the braces to even get onto the tray. That's what messed me up. So I have to measure batteries to see which will fit as well as being the "best" I can get. Tight fit for the Mopar.
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Old 12-01-2018, 12:47 AM   #5
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Yeah, I've used the Chrysler battery in our Town and Country with great results so was sticking with it for the Jeep but the group 34 (which I believe the Jeep calls for) was just physically too big to fit on the tray or squeeze through the braces to even get onto the tray. That's what messed me up. So I have to measure batteries to see which will fit as well as being the "best" I can get. Tight fit for the Mopar.
YJís actually call for a Group 58 as an OEM. Unfortunately I believe they are only 500-550 CCA depending on manufacturer. 34ís generally fit so I canít say for sure what is going on with your particularly application.

I am a fan of Absorbed Glass Mat technology, and have had exceptional luck with both spiral (Optima) and conventional (Odyssey, etc.) designs. I have only had one Optima live an abbreviated life, that was one I did not purchase new, and the vehicle it was in was allowed to sit for long periods of time prior to me obtaining it with no Battery Tender to maintain it.

I have installed the Red Top Optimaís in a bunch of vehicles over the years, including my YJ. 800 CCAís.
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Old 12-02-2018, 07:54 PM   #6
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Originally Posted by SoCalC101CJYJTJ View Post
YJís actually call for a Group 58 as an OEM. Unfortunately I believe they are only 500-550 CCA depending on manufacturer. 34ís generally fit so I canít say for sure what is going on with your particularly application.

I am a fan of Absorbed Glass Mat technology, and have had exceptional luck with both spiral (Optima) and conventional (Odyssey, etc.) designs. I have only had one Optima live an abbreviated life, that was one I did not purchase new, and the vehicle it was in was allowed to sit for long periods of time prior to me obtaining it with no Battery Tender to maintain it.

I have installed the Red Top Optimaís in a bunch of vehicles over the years, including my YJ. 800 CCAís.

I also liked these batteries. The picture shows a battery bought a year ago.


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Old 12-03-2018, 12:11 AM   #7
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I also liked these batteries. The picture shows a battery bought a year ago.


Thatís crazy! Do you think it has been affected by heat, or that it may be growing sulphates in it? I just went and checked my YJ (two year old red top), my old Nova (five year old red top), my boat (two four year old blue tops), and none of them are like that. Have my friendís XJ and his kidís TJ out in the shop, going to check those too. Is that thing a daily driver?
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Old 12-03-2018, 12:34 AM   #8
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I do not know why this is happening. But this is definitely not from the heat. I checked the alternator, everything works fine.
My charger is designed specifically for AGM.
The same cases:
https://www.s10forum.com/forum/f62/l...op-did-499418/


https://www.ar15.com/forums/general/...ng_/5-1925008/
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Old 12-03-2018, 08:09 PM   #9
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The battery trays are orientated different in the earlier, and later YJ's

In order for a group 34 battery to fit in a 87-90 YJ, you need to remove the small bracket on the outside of the tray. There are 2 small torx bolts holding on a small spacer bracket. You need to remove the tray to access them.

I just did this last week, when my new 34 odyssey battery would not sit flat on the tray.
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Old 12-04-2018, 02:18 AM
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Not really seeing that on mine. Any chance you could post a photo? Thanks.
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Old 12-05-2018, 12:22 AM   #11
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on the left side of the YJ tray is a rectangular bracket in the pan. They don't show it as such, but it is removable.

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Here is mine removed.

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Old 12-05-2018, 01:11 AM   #12
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^ Old Yeller got it right to fit the group size 34. Most parts stores say the group size 58 fits but it never did in my older tray with that bracket. The 56 fit nicely into my tray with that bracket. I only use the group size 34 agm battery now.
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Old 12-05-2018, 02:26 AM
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Interestingly, I did find a group 34 battery that should slip between the two angle braces holding up the tray. It's an Interstate and has the exact same dimensions of the Survivor battery that came in the Jeep when I bought it. Exactly. Makes you wonder if they're from the same company. And it has 700 CCA vs the 590 of the group 56 or 58 that I thought I would need to go with for fit purposes. The bracket in the tray wasn't my problem. It was the bump outs on the angled braces that made several of the batteries I was eyeing to be too wide for the space to install through.
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Old 12-05-2018, 10:48 AM   #14
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Advance Auto tried to sell me a larger size battery because that's what their computer screen brought up.
Fortunately, I was standing there with my trade on the counter and I said no I want this physical size.
My '90 also loads Positive toward the firewall and Negative towards the Grille.
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Old 12-05-2018, 01:20 PM   #15
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Interestingly, I did find a group 34 battery that should slip between the two angle braces holding up the tray. It's an Interstate and has the exact same dimensions of the Survivor battery that came in the Jeep when I bought it. Exactly. Makes you wonder if they're from the same company. And it has 700 CCA vs the 590 of the group 56 or 58 that I thought I would need to go with for fit purposes. The bracket in the tray wasn't my problem. It was the bump outs on the angled braces that made several of the batteries I was eyeing to be too wide for the space to install through.
Most lead acid batteries found in US cars are manufactured by Johnson Controls or East Penn. They sell to different stores which in turn label them and sell them under their brand.
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Old 12-05-2018, 03:25 PM   #16
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I had a NAPA battery fail. It was about a year old, so under warranty. I called my local NAPA and asked if they had a "XXX" sized battery. Yep.
I go to the store with my bad battery and the new battery ends up with the same part number, but a different size (smaller). We all scratch our heads until the manager comes out and we measure the bad battery. The manager finds one the same size and gives it to me. Free because the bad one was still under the free replacement warranty.

Nobody could figure out why two different sized batteries had the same part number. This isn't a complaint against NAPA, it's just a statement that sometimes things get screwed up.

When buying any part, I always want to take the old part with me to compare to the new one. It's saved me enough returns that I continue to do so as often as is practical.

The clerk originally wanted me to take the smaller battery with the same part number, but I wouldn't because I'm running dual batteries and the clamp that holds them in the tray requires that both batteries are the same height. The CCA was the same on each.

Good Luck, L.M.
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HEI distributor with computer and all related relays and wiring removed.
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Old 12-11-2018, 11:59 AM   #17
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Most lead acid batteries found in US cars are manufactured by Johnson Controls or East Penn. They sell to different stores which in turn label them and sell them under their brand.


This is why I always buy Deka batteries. They are East Penn’s own marketed brand.
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Old 12-14-2018, 02:32 AM
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Well the Interstate 34 series finally fit. Now does anyone know where I can find the battery hold down setup pictured here for Wranglers? I've found a few universal ones at my local auto parts stores but none have this type of J bolt which I would need for the offset fastening locations that are on the battery support brackets. Thanks if anyone can advise on this.
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Old 12-15-2018, 08:37 AM   #19
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I bought an aftermarket battery hold down kit with very long J-rods. I then used a torch to heat up the J, straighten it, then bent it into the large square ends that match the factory ones. Finally I had to run a die down each to extend the threads, and cut off the excess.

You may have to do something similar, since the OEM parts are not available.

Rob
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Old 12-15-2018, 11:15 AM   #20
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Well the Interstate 34 series finally fit. Now does anyone know where I can find the battery hold down setup pictured here for Wranglers? I've found a few universal ones at my local auto parts stores but none have this type of J bolt which I would need for the offset fastening locations that are on the battery support brackets. Thanks if anyone can advise on this.
If you take the PN from that diagram and do a search using your favorite search engine, you may be surprised what you come up with. While you will certainly get some hits that state the part is NLA or discontinued, I would bet there are some dusty NOS ones out there somewhere. I have tracked down plenty of relatively obscure NOS pieces.
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Old 12-15-2018, 01:13 PM   #21
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If you take the PN from that diagram and do a search using your favorite search engine, you may be surprised what you come up with. While you will certainly get some hits that state the part is NLA or discontinued, I would bet there are some dusty NOS ones out there somewhere. I have tracked down plenty of relatively obscure NOS pieces.
I've been in the vehicle business all my life. I'm now retired. What SoCalC101CJYJTJ states is true.
A lot of your success depends on the counterperson that you're dealing with. If you have a good parts person that's willing to use the resources available to them, you'd be surprised at what you can find.

Most dealers have access to a nationwide parts locator. Sometimes even two nationwide locator systems. When I needed a fuel pump for my wifes V-Rod my local H-D dealer parts guy told me that the fuel pump was on backorder.
Another dealer that used a different locator found one in another city and ordered it in for me.
As with most things in life, your success depends on how much effort you put into the task.

Good Luck, L.M.
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HEI distributor with computer and all related relays and wiring removed.
12K Badlands winch with dual batteries.
Warn front bumper. Matching imitation Warn bumper on the rear.
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Old 12-15-2018, 05:12 PM   #22
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Just a suggestion here. When you find the size of battery you need, consider getting one with the extra terminals. The one I got has + & - on top and + &- on the side. I use the top terminals for the normal hookups, and used the side posts for the winch and added peripherals. Really cleaned things up nicely.
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Old 12-15-2018, 08:00 PM   #23
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Just a suggestion here. When you find the size of battery you need, consider getting one with the extra terminals. The one I got has + & - on top and + &- on the side. I use the top terminals for the normal hookups, and used the side posts for the winch and added peripherals. Really cleaned things up nicely.
I guess it probably depends on who made the battery but Optima says you are not supposed to run a winch of side terminals. Side posts cant handle the amp draw and they will melt. Optima will void your warranty if your battery fails because the side posts are melted.

I cut open a everstart battery sprayers ago (dont ask). And the way the terminals were made the top post had the thickest lead and then there were some thinner strips coming off it that linked to the side posts. I would never attach a winch to side posts they are not as beefy as top posts and i could see them melting under high amp draw after taking one apart.
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Old 12-16-2018, 03:27 PM   #24
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Thanks for that info. I did some checking around, and it seems that, with the exception of the Optima battery, one may or may not get away with it. Sort'a like the Dana 30/35 argument.
But I think that based on the info I've seen, I may just swap the leads.
Thanks again.
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Old 12-16-2018, 04:16 PM   #25
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I was just out in my shop doing some cleaning. I found my old single battery box. I had removed it because I'm running dual batteries. What I see is that a PO had bashed the little boxes on the struts that run up to the firewall out a bit. See the pic that was originally posted by Old Yeller. Mine never had the rectangular bracket that's shown on the left (vehicles right or passenger side) side of the pic.
By making a "field modification" with a BFH, the PO was able to fit a slightly larger battery.
Apparently this field modification had no detrimental effect on the battery nor the batterys function.

Good Luck, L.M.
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HEI distributor with computer and all related relays and wiring removed.
12K Badlands winch with dual batteries.
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Old 12-16-2018, 04:19 PM   #26
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FWIW.... I've had a 12,500 lb winch on the side posts of my dual terminal optima for quite a few years without any problems..... I don't think I would go as far as to suggest hooking up that way but it may not be the instant death sentence some folks think it is....

One day I'll set up on a heavy pull and measure voltage drop between top and side terminals under load.

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