Replaced both batteries

[Blu bi Kong]

Yeah, you’ll want to get a real fridge at some point. Our ARB fridge/freezer has never done that to us. We’ve left it plugged in and running for days in the back of our Ram wired directly to the battery with never any issues.

The only issue I have with the ARB is the size. Going to not be a dumbass again. First time in 20 yes of using these. The dreaded first time. I have also since bought a lithium jumper and purposely left fridge plugged in this week. It went dead but started with the jumper.

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[Martindfletcher]

That’s my plan...

 

[AlamedaJeep]

The only issue I have with the ARB is the size. Going to not be a dumbass again. First time in 20 yes of using these. The dreaded first time. I have also since bought a lithium jumper and purposely left fridge plugged in this week. It went dead but started with the jumper.

Not trying to derail the thread, but this is the first I have heard of anyone successfully using a lithium jumper pack. Unless I'm misunderstanding your post, this sounds like good news (if it can be replicated). Did it start right away or did you leave it connected for a while before starting?

 

[Midwestguy]

Dang nambit, shouldnt have looked...this is now on my list for upgrades. Smart move for sure. This is how it should come from the factory, cant imagine it would cost Jeep much more than they way it is now.

@JeepCares :Please send this thread to the engineers...this is a solid must.

 

[bobUK]

Ask yourself one question, did anyone have these battery issues prior to Stop/Start and smart charging, if the answer is no, you have found your problem, the fix is to disconnect the negative rail sensor on the starter battery. With the sensor disconnected the EMU can`t read the SOC of the battery and defaults to a standard charging regime as it does if the sensor actually fails, the alternator now charges at between 13.6/8 volts to 14.2 volts and now attempts to fully charge the battery instead of allowing the SOC to fall to 75% as it did when sensor was connected. With the sensor connected and the SOC of battery showing a 75% level of charge only energy regeneration is allowed to charge the remaining 25% of the battery, if there is little regeneration and stop/start comes in on a regular basis the battery can remain at this low level of charge, this is bad for the battery, unless the battery is fully charged on a regular basis it`s life will be short. Try it, if not happy just reconnect sensor. You will not have stop/start or regeneration though, the fuel gains are minimal with these systems working so the loss should not be to concerning.

http://www.batteriesinternational.c...lters-as-drivers-disable-start-stop-function/

 

[NCIC105]

Ask yourself one question, did anyone have these battery issues prior to Stop/Start and smart charging, if the answer is no, you have found your problem, the fix is to disconnect the negative rail sensor on the starter battery. With the sensor disconnected the EMU can`t read the SOC of the battery and defaults to a standard charging regime as it does if the sensor actually fails, the alternator now charges at between 13.6/8 volts to 14.2 volts and now attempts to fully charge the battery instead of allowing the SOC to fall to 75% as it did when sensor was connected. With the sensor connected and the SOC of battery showing a 75% level of charge only energy regeneration is allowed to charge the remaining 25% of the battery, if there is little regeneration and stop/start comes in on a regular basis the battery can remain at this low level of charge, this is bad for the battery, unless the battery is fully charged on a regular basis it`s life will be short. Try it, if not happy just reconnect sensor. You will not have stop/start or regeneration though, the fuel gains are minimal with these systems working so the loss should not be to concerning.

http://www.batteriesinternational.c...lters-as-drivers-disable-start-stop-function/

How do you disconnet it?

 

[Jebiruph]

Ask yourself one question, did anyone have these battery issues prior to Stop/Start and smart charging, if the answer is no, you have found your problem, the fix is to disconnect the negative rail sensor on the starter battery. With the sensor disconnected the EMU can`t read the SOC of the battery and defaults to a standard charging regime as it does if the sensor actually fails, the alternator now charges at between 13.6/8 volts to 14.2 volts and now attempts to fully charge the battery instead of allowing the SOC to fall to 75% as it did when sensor was connected. With the sensor connected and the SOC of battery showing a 75% level of charge only energy regeneration is allowed to charge the remaining 25% of the battery, if there is little regeneration and stop/start comes in on a regular basis the battery can remain at this low level of charge, this is bad for the battery, unless the battery is fully charged on a regular basis it`s life will be short. Try it, if not happy just reconnect sensor. You will not have stop/start or regeneration though, the fuel gains are minimal with these systems working so the loss should not be to concerning.

http://www.batteriesinternational.c...lters-as-drivers-disable-start-stop-function/

This doesn't apply to the 3.6 ESS because it's not a regenerative system.

 

[c2m2h3]

Can someone please post a link that explains the Genesis Dual Battery System ? Not being overly knowledgeable about amps, etc. I'm a bit confused about the entire dual battery system problems with the ESS and the factory set up....Sounds like this new system has solved the issue....

 

[wyobob44]

here is the link to Genesis Off-road , read down the page for your explanation.


https://www.genesisoffroad.com/JeepJLDualBattery-p/185-jldbk.htm

 

[smores]

I had the message "Aux switches not available, battery charging" for a couple of times I started the Jeep.

So, took it to the dealer and they said the main battery was bad. I explained about the Aux battery and asked if it was tested, "yes and passed".

Okay, then I picked it up and when I started it..... yep, same warning on dash..........

The service manager said he never heard of this, wait isn't that why I brought it in to begin with?

Said he would get with Jeep and let me know. I asked about the aux battery and he said it tested good..............

After a couple of days and calls, I told them i would bring it in and get a rental until they figure this out..........

The next day they called and said to bring it in as Jeep told them to test the aux battery as it looked like it was bad........ ????

Brought it in on an appointment at 730am and at 4pm they called and said the aux battery passed 2 times and on the third time it failed.

They are going to replace it as well, but there is a Nation wide back order for the battery and it will be a week before it comes in, picked the Jeep up again.

Asked the service manager about the voltage being high at 14.4-14.5 and was told that is normal all the time......

Asked why the battery was back ordered, a lot of them being replaced?

He went off about FCU changed vendors and now they can't get batteries for just about any vehicle.

My take on this is I will have to replace batteries about every 2 years as long as I own this Jeep. LOL

This isn't a complaint more of a laugh as they just wouldn't listen to me for any reason.............

Dealership cannot warranty parts without the battery tester spitting out a receipt that says the battery failed. That's standard across all brands/manufacturers. It's also not uncommon for manufacturers to change parts suppliers (especially if parts are failing from those suppliers). I wouldn't worry about it. You're definitely not going to have to replace batteries every 2 years.

 

[c2m2h3]

Thanks wyobob44 !

I watched the video install and it seems pretty straight forward. I have been trying to watch and keep up with all the different threads about the dual battery and ESS system....

Are owners finding that the stock system is draining batteries way too fast and leaving owners stranded ?
Does this new system (Genesis) allow for an easier jump start (with a jump pack) should it become necessary ?

I have read that even some of the best jump packs can't jump the new system (stock) and that confuses me.....I KNOW THERE ARE SEVERAL THREADS ABOUT IT.....I was not aware that not only is the jump start process difficult (almost impossible with a jump pack) but now the batteries are draining at an alarming rate ?

Chris

 

[D60]

Everyone seems to be under the impression that the Genesis system somehow solves the JL's unique system, but I'm not seeing that, even reading through their entire product page.

It's just a basic dual batt system the likes of which has been around for decades -- I was running a system from Wrangler NW Power Products 20 years ago and motorhomes have been doing this for decades of decades

If you read their page carefully a completely fawked aux batt is still gonna leave you having to jumper N1 and N2, just like stock. Now, in the case of just a drained aux batt it could help, but so could just an N1/N2 jumper.

"

• As long as the accessory battery has enough power, you'll be able to start your vehicle instead of being stranded with a dead battery!

I'm not bashing Genesis, but I don't understand what I would classify as internet lore on this forum that it's a panacea for JL's unique battery setup.

The only thing unique about it is that it FITS the JL's relatively cramped space, and that's fine.

You could do something similar with a battery underneath where the turbo 48V is normally stashed, some welding cable, and an isolator as fancy as you care to use/pay for (I prefer a constant-duty solenoid and a switch in the cab - cruder but simpler and no electronics)

 

[D60]

Thanks wyobob44 !

I watched the video install and it seems pretty straight forward. I have been trying to watch and keep up with all the different threads about the dual battery and ESS system....

Are owners finding that the stock system is draining batteries way too fast and leaving owners stranded ?
Does this new system (Genesis) allow for an easier jump start (with a jump pack) should it become necessary ?

I have read that even some of the best jump packs can't jump the new system (stock) and that confuses me.....I KNOW THERE ARE SEVERAL THREADS ABOUT IT.....I was not aware that not only is the jump start process difficult (almost impossible with a jump pack) but now the batteries are draining at an alarming rate ?

Chris

More internet lore. If you know which negative cable to disconnect and you jumper N1/N2 a jumper pack should work the same as any other vehicle

 

[c2m2h3]

D60 Can you explain that a bit more ?......NOT that I agree with the stock set up, especially if it is causing several issues and draining the system....THAT sounds like a recall problem......Bu,t I merely want to make sure the system is not draining (some irregular issue) and if the system were to lose power (as with any battery that can happen) that a jump pack would do the job.....However, I have read that it is not sufficient....can you explain....I know guys like Jebiruph have FULLY explained things and took a ton of time to write up a VERY thorough explanation on the system. (just a bit over my head) ...... I just need it broken down so that a 16 year old (I;m NOT 16) could understand the jump process....


Thanks.


Chris

I saw that Jebiruph was on this thread earlier.....fell free to jump in (no pun intended) !

 

[zb39]

When you install the Genisis system the small aux battery comes out and goes in garbage. You now have 2 full size batteries.

I leave my ARB fridge on at all times and sometimes don't drive the jeep for weeks on end.

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