Stop/Start not working - battery charging

[mwilk012]

The dealer said they tested both and the voltage is good. I am not sure what to make of that

They’re wrong.

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[Jeepin_Donnie]

Just before my main battery gave up the ghost, my TPMS appeared to be malfunctioning. No TPMS issues. Just the battery. Yanked em both and put in 2 deep cycle Optima and the Genesis Dual Battery system.

Costly, but I'm glad I did it

I have the Genesis Dual Battery system as well but used the Full River/Full Throttle batteries. The peace of mind is worth the cost!

 

[DaltonGang]

I know everyone says "Replace Both, at the same time", or you will be sorry. I had my tiny battery crap out for over a year, before I had it replaced. The larger battery was left alone. That was around 6 months ago, and I have not had any issues. Perhaps, when they reprogrammed the ess system, a couple of years ago, that shielded the main battery from being drained.

 

[NULL POINTER]

Yes I hate it too but I read the constant state of trying to charge will drain aux and main battery !?! True ?

I cannot speak for everyone, but in my case - TRUE.

 

[mwilk012]

I have the Genesis Dual Battery system as well but used the Full River/Full Throttle batteries. The peace of mind is worth the cost!

Your batteries will still fail.

 

[jeepoch]

This happened to me as well. AUX battery did not pass a load test so it was replaced with a Mopar replacement. Main is fine.

However, I later discovered that a Viatech SXM satellite receiver that I had professionally installed was wired up directly to the battery. This was just enough to drain the AUX battery to where it was always causing "Battery Charging" and "Battery Protection Mode" reasons for why the ESS was routinely being disabled.

After rewiring everything to remove the electrical drain after ignition off, the ESS system is again working well.

I'm one of the true oddballs in that I don't mind ESS. There's something soothing (maybe only to me) of listening to silence when stopped at traffic lights.

Truthfully, I would have gladly invested in the Genesis Dual Battery kit if it didn't have that silly six cycle ESS limit. As much as they charge for their kit, you would think they could devise a circuit to allow the IBS system to measure the voltage of each battery independently. The ESS expects to see a small difference of potential in order to ensure that the two batteries are indeed wired properly. If the measured voltage across both are identical, then the batteries have been bypassed, or there's only one. Hence the ECM provides only six ESS cycles max in order to protect the Main. At the very least to try and ensure it has enough charge to crank the starter at the next ignition on event.

I only wish that the genius of the @Genesis Offroad dual battery tray could be made to have another use case other than the absolutely stubborn one that they will only market to. Their overall tray implementation is outstanding. If only they would provide an option for a larger size AUX rather than the really complicated voltage monitoring and cross charging strategy for the die hard overlanders.

Oh well, their marketing short-sightedness means they're losing out on potential sales to all the mall crawlers or single day off-roaders. Even though I'm confident I could rewire their tray to remove all that expensive sophistication, they've lost my business.

Jay

 

[Jebiruph]

This happened to me as well. AUX battery did not pass a load test so it was replaced with a Mopar replacement. Main is fine.

However, I later discovered that a Viatech SXM satellite receiver that I had professionally installed was wired up directly to the battery. This was just enough to drain the AUX battery to where it was always causing "Battery Charging" and "Battery Protection Mode" reasons for why the ESS was routinely being disabled.

After rewiring everything to remove the electrical drain after ignition off, the ESS system is again working well.

I'm one of the true oddballs in that I don't mind ESS. There's something soothing (maybe only to me) of listening to silence when stopped at traffic lights.

Truthfully, I would have gladly invested in the Genesis Dual Battery kit if it didn't have that silly six cycle ESS limit. As much as they charge for their kit, you would think they could devise a circuit to allow the IBS system to measure the voltage of each battery independently. The ESS expects to see a small difference of potential in order to ensure that the two batteries are indeed wired properly. If the measured voltage across both are identical, then the batteries have been bypassed, or there's only one. Hence the ECM provides only six ESS cycles max in order to protect the Main. At the very least to try and ensure it has enough charge to crank the starter at the next ignition on event.

I only wish that the genius of the @Genesis Offroad dual battery tray could be made to have another use case other than the absolutely stubborn one that they will only market to. Their overall tray implementation is outstanding. If only they would provide an option for a larger size AUX rather than the really complicated voltage monitoring and cross charging strategy for the die hard overlanders.

Oh well, their marketing short-sightedness means they're losing out on potential sales to all the mall crawlers or single day off-roaders. Even though I'm confident I could rewire their tray to remove all that expensive sophistication, they've lost my business.

Jay

You can buy just the tray and wire the dual batteries like the main and aux.

 

[jeepoch]

You can buy just the tray and wire the dual batteries like the main and aux.

Yep, still considering it. But a complete kit sure would be nice.

 

[Jeepin_Donnie]

Your batteries will still fail.

I've read a million different posts on this. Care to explain more?

 

[JeepFiend]

Does anybody use the search feature? There's a battery thread every day, must be thousands by now.

Blasphemy!!!

 

[mwilk012]

I've read a million different posts on this. Care to explain more?

Batteries wear out. It’s a non issue.

 

[Jeepin_Donnie]

Batteries wear out. It’s a non issue.

Thanks. I know they will need replacing at some point.

 

[mwilk012]

Thanks. I know they will need replacing at some point.

The problem with the factory battery setup is the horrendous quality of the OEM batteries. The group size 48 AGM main is no better than the aux. Most makes and models are fitted with poor factory batteries.

 

[Jeepin_Donnie]

The problem with the factory battery setup is the horrendous quality of the OEM batteries. The group size 48 AGM main is no better than the aux. Most makes and models are fitted with poor factory batteries.

Totally agree!

 

[Deleted member 59498]

45k miles is pretty good with factory batteries I would think. But yeah all batteries regardless of how much they cost are going to fail someday.

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