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Melchior

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The battery gauge/meter on our jeeps…is that for the main battery or the aux or the combination of both?
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Boatbuilder88

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Just be happy you didn’t have the problematic E-torque equipped Jeep.
Love my eTorque-equipped Jeep. Purchased in late-2018 and replaced the main AGM battery after 5 years. All good.
 

Opus

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I'll never understand the "swan song" post. Ffs, just go if you're going...

 

Carolina Jeeper

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A proper parallel battery setup is a solution and it comes from a manufacturer… it’s just not Jeep, but Genesis. Overkill for many of us, yet still the best option I have seen out there.
That's what I did. The Genesis dual battery kit is top notch. They've even updated their kit since I installed mine.. It's a pricey upgrade, but I think it's been worth it for the peace of mind.
 

rohdawg

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That's what I did. The Genesis dual battery kit is top notch. They've even updated their kit since I installed mine.. It's a pricey upgrade, but I think it's been worth it for the peace of mind.
It’s not even overkill anymore with the aux battery relocation kit they just released. Just depends on how much you’re willing to spend to make a crap system a better one.
 

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azjl#3

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Seems last year batteries in general have taken a nose dive on quality. I am having to replace three 13 month old RV house batteries that look pristine, been kept on high tech solar charging system, but drop to 11.5 volts in 45 minutes of a 12 volt led light being on. And an 18 month old two year warrantied agm battery. That plus three others, 12 batteries in 18 months, ouch.

Wondering if they are giving up on lead acid quality, going all in on Li batteries.

And sorry, but the aux battery fix is a band aid repair, not a fix. That's just plain English.
 

Carolina Jeeper

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It’s not even overkill anymore with the aux battery relocation kit they just released. Just depends on how much you’re willing to spend to make a crap system a better one.
Oh yeah, I did see that newest aux battery relocation kit. That's a good option for someone not willing to go for that other kit.
 

alphawolff

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My 2019 wrangler built late 2018 still on BOTH original batteries. Did the ESS bypass when new.
This is the way. If you never use ESS the battery will easily last the expected 3-5 years. If you're using SS you're lucky to get 2 years out of them. I try to tell people that any fuel savings they might get over the years is immediately outpaced by having to replace the batteries so often; especially if you're paying the dealer to replace them.

AGM batteries hate being discharged. Get one completely flat and it's almost guaranteed to never hold a charge again. They're designed to start the vehicle and then sit at essentially full capacity 99% of their life. Instead you're sitting at a red light for 2 minutes running all the electronics 5-10 times every drive cycle. The aux begins to fail due to this as it's significantly smaller at 200CCA, then the aux begins to kill off the primary since they're always connected to each other while the vehicle sits. They just don't hold up.
 

YJdude

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Speaking of Tacomas, I had wondered why my phone mount had Wrangler and Tacoma printed on it, in terms of compatibility.

Turns out, there's more than a passing similarity betwixt our dashboards. The vents are just Exhibit A.

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Offroam or Tackform?
 

R3TRO

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It’s not even overkill anymore with the aux battery relocation kit they just released. Just depends on how much you’re willing to spend to make a crap system a better one.
Hmmm... just took a look at this. Would still probably get their dual kit, but I like that there are other options now.
 

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Camaroboi13

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My 2019 wrangler built late 2018 still on BOTH original batteries. Did the ESS bypass when new.
My wife’s 18 JLU just got a replacement battery about 4 months ago. New main battery, original one died while sitting in the garage for 3 weeks while we were in Maui. Still using the original auxiliary battery.

Never messed with turning ESS off. Worked fine for a couple months then never worked again. Replaced main battery, ESS started working again. Guess what? 2 months later, ESS not working anymore. I just don’t care to worry about it.
 

pnut

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I love everything about my '21 JLU Willys Edition, except the Auxiliary Battery and the pesky Battery Charge Warning Light. The first time the Warning Light appeared, maybe a year or so into ownership, the dealer replaced both the Main Battery and Auxiliary Battery. Everything was fine until the warning light appeared again, maybe a year or so later. The dealer installed a new Auxiliary Battery, which did not charge. That didn't solve the problem so back to the dealer, this time to replace the Main Battery. Four new batteries to the dump, and counting. About a year ago, the Jeep wouldn't start. You guessed it: Battery Warning Light back on. Called AAA, who helped me jump start the Main Battery. Then back to the dealer, who replaced both the Main and Auxiliary Batteries. Now six relatively new batteries had been removed and sent to the dump. The local Jeep dealer suggested coming in to test the batteries before the first 36 months went by, as the "Extended Warranty" does not cover the one problem I keep having with the Auxiliary Battery. Two weeks ago, after driving the day before, the Jeep wouldn't start. This time, the same AAA driver came by, jump started the battery, but the Battery Charge Warning Light stayed on. With six relatively new batteries in the local dump, a Jeep that wouldn't start, the prospect of buying two more batteries despite an "Extended Warranty", less than 29k miles in under 39 months, lots of money spent on mods, clean Carfax and nothing else wrong other than not starting, a Warranty that doesn't cover the things that break, six relatively new batteries in the dump, and getting to know the local AAA Roadside Assistance guy who remembered the last visit, that was it. I traded in my Jeep. I loved my Jeep but need something that starts when I press the ignition. No need for @JeepCares, but as so many know, the Auxiliary Battery is a defective design, and I will gladly work with a Class Action attorney or @NHTSA.

Grill and Wincb Level.jpg
Sorry to hear about the problems.

You mentioned multiple times batteries going to the dump (4 x)

To clarify, they go for recycling even when dead, not to the dump. Even Jeep does that.
 

JSFoster75

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The batteries in my 21 went out within the first year. Went down to the parts store and swapped in two die hard AGM replacements. Zero trouble since.

You can get the dealer to swap in junk batteries one after the other under warranty. Or you can fix the problem.



"The definition of insanity is doing the same thing over and over and expecting different results." -Albert Einstein
Actually Einstein never said that - Someone did however... And it's very true...
https://checkyourfact.com/2019/06/2...-instanity-same-thing-over-different-results/
 

Stuckinthesand

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It isn’t 1960, no one should have to babysit a battery just because the vehicle sits for a few weeks. Utter bullshit.
Not really bs. Put all the electronics that are in vehicles nowadays into vehicles from the 60's and see how long the battery lasts. Modern vehicles never truly have everything shut off. There is always something running in the background. I replaced my main battery with a H7 and deleted the aux and have had no issues since. The fuel savings compared to replacing the batteries and eventually the starter from all those stops and starts wont make up for the cost.
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