How to take advantage of ESS effectively.

[FatBoy01]

@BumpyTrail

Oh my, so much talk on this my head is spinning. Look at it like the two batteries are in a marriage. The main is the husband and the Aux is the wife. In this coupling the husband is dominant They perform all 12v functions as a family. When they eat (you jump them) they eat together. They work as a family unit.. both Husband and Wife have different jobs to do around the Jl house. Now, if the Wife goes missing or completely dead the husband is in mourning and the family unit is greatly impacted and thus no attempt at work (JL will not start) is done by the remaining family unit member... the husband.

So, husband goes to Jeep dealership and get a new Wife and all is well in the family again.

And that's Fatboy01's bedtime story for all tonight.

p.s. In the above story, if the husband dies goes missing the Wife says frigg it and keeps working... doing family chores. She will start the JL on her own!

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[BillyHW]

@BillyHW

This
"Should" as in it will never get depleted under normal circumstances because it will always be receiving trickle charge from the main battery?

and yes to the second.

Disclaimer: I am believing this is the way it is til proven otherwise.. 8-)

Okay, so as long as the smaller battery is not defective, and the larger battery has charge, the vehicle will still start, if I am understanding correctly. This is a good thing.

However, I am still concerned about the Genesis dual battery setup that is coming. They replace the smaller battery with a full size but then put an isolator between the main and aux. What if you drain the secondary battery with your accessories? Then you won't be able to start the vehicle because it's isolated and can't accept a charge from the main battery. I hope they've got a solution figured out.

 

[FatBoy01]

Okay, so as long as the smaller battery is not defective, and the larger battery has charge, the vehicle will still start, if I am understanding correctly. This is a good thing.

Yes, as long as the Aux battery is in place, healthy . Oh, but remember, reality is the main battery can be missing and the Aux will start the Jl.


On the other,
They will have to come up with something and they will.

 

[BillyHW]

Yes, as long as the Aux battery is in place, healthy .


On the other,
They will have to come up with something and they will.

Looks like they (Genesis) already have a "boost" button which will connect the two batteries in parallel temporarily to start the vehicle. On the JK version this was used if your main battery was dead, but you still had some charge in the second. You could then press the button and they would join together and you could start the car.

I suppose in a JL if the second battery was without charge, you could still press the button to join them together, and if the main had charge you could then start the car. Kind of like the reverse of the JK scenario.

But the button press was supposed to be a rare thing. Now it looks like an every day thing if you use that second battery to the limit. Also, the button is under the hood which is a pain, unless you buy the $$$ interior button accessory.

 

[FatBoy01]

@BillyHW

Did you like my little story.. does it make it clear to those that read it ?

You canucks ask alot of ? .. :cwl:

 

[BumpyTrail]

Looks like they (Genesis) already have a "boost" button which will connect the two batteries in parallel temporarily to start the vehicle. On the JK version this was used if your main battery was dead, but you still had some charge in the second. You could then press the button and they would join together and you could start the car.

I suppose in a JL if the second battery was without charge, you could still press the button to join them together, and if the main had charge you could then start the car. Kind of like the reverse of the JK scenario.

But the button press was supposed to be a rare thing. Now it looks like an every day thing if you use that second battery to the limit. Also, the button is under the hood which is a pain, unless you buy the $$$ interior button accessory.

That makes more sense! It wasn’t adding up they’d be parallel (interdependent) full time. Where is the button on the JKs? It’s easy to believe (assume) it to be one way but I guess we won’t know everything until we’re supposed to. I was going to say we should know for sure soon when the Ram 1500 comes out but I just saw they pushed the production date back to third quarter. Hope it’s not due to eTorque issues. FCA could really benefit from a smooth roll out at some point! Haha

 

[BillyHW]

@BillyHW

Did you like my little story.. does it make it clear to those that read it ?

You canucks ask alot of ? .. :cwl:

I just don't want to freeze to death when I go explore the ice roads up north one of these winters because my jeep wouldn't start. I need to understand how all this works...

 

[BillyHW]

That makes more sense! It wasn’t adding up they’d be parallel (interdependent) full time. Where is the button on the JKs? It’s easy to believe (assume) it to be one way but I guess we won’t know everything until we’re supposed to. I was going to say we should know for sure soon when the Ram 1500 comes out but I just saw they pushed the production date back to third quarter. Hope it’s not due to eTorque issues. FCA could really benefit from a smooth roll out at some point! Haha

The button isn't on the JK itself. It comes as part of the Genesis Dual Battery Kit.

 

[Sean L]

WELL, this kind of got off topic lol.

 

[Sean L]

Take everything Scotty Kilmer says with a grain of salt.

 

[WXman]

I'm getting used to the way the ESS system works and I'm still loving it. I've learned that it won't kick the engine off if the wheels are turned, so when I'm in the McD's drive-thru sitting and waiting I try to keep my steering wheel straight.

I've also learned the trick of lightly holding the brake pedal when I know I don't want the ESS to engage, and I've gotten used to the 5 MPH threshold where the ESS won't kick in during a traffic jam unless the speedo goes beyond 5 MPH between cycles.

After you get used to it, it's really great. Dash still showing 21 MPGs coming up on my 3rd fillup. Most fuel efficient 4x4 I've ever owned.

 

[FatBoy01]

@BillyHW

Was at Jeep Beach 2018 in Daytona Beach Florida, today. Genesis had a booth there. Shane the owner of Gensis, was there with his Bright White Rubi JLU. Anyway, he has the Genesis dual battery set-up you are interested in, in that JLU. I spoke with Shane for about 30 minutes. I got to lets say pick his head in regard to his JL offering. Anyway, the Genesis dual battery is really a decent set-up. I saw the boost button, talked ESS, etc. with Shane.

With the Genesis offering, the little factory aux. (ESS battery) is history. The Genesis offering is really a clean set-up..

Oh, Shane confirmed, that even if the main battery on a JL is fully charged, if you remove the aux battery or if the Aux battery is dead, the JL will not start..

He also mentioned, his dual battery offering for the Jl, is working flawlessly... to include working with the ESS function.

 

[BillyHW]

@BillyHW

Was at Jeep Beach 2018 in Daytona Beach Florida, today. Genesis had a booth there. Shane the owner of Gensis, was there with his Bright White Rubi JLU. Anyway, he has the Genesis dual battery set-up you are interested in, in that JLU. I spoke with Shane for about 30 minutes. I got to lets say pick his head in regard to his JL offering. Anyway, the Genesis dual battery is really a decent set-up. I saw the boost button, talked ESS, etc. with Shane.

With the Genesis offering, the little factory aux. (ESS battery) is history. The Genesis offering is really a clean set-up..

Oh, Shane confirmed, that even if the main battery on a JL is fully charged, if you remove the aux battery or if the Aux battery is dead, the JL will not start..

He also mentioned, his dual battery offering for the Jl, is working flawlessly... to include working with the ESS function.

Okay thanks for the info.

I'm not too interested that ESS is working with the Genesis kit, because I plan on turning that off.

What concerns me is the car not starting if the Second battery is dead. The whole point of the dual battery kit is that you can drain the Second battery while protecting the Main battery for starting the car.

I think the boost button should still help because it temporarily joins the two batteries in parallel, so if the Main battery has power because it was protected, then both the Main battery circuit and the Secondary battery circuit will get power temporarily to start the vehicle. Although I anticipate having to press that button more often than on a JK, say.

I hope Shane knows what he is doing. I think I read somewhere that he's an electrical engineer. I also hope he had access to the Witech circuit diagrams.

And finally, do very bad things happen if the Second battery dies, like important memories being wiped out? Will the Jeep computer go bonkers if it loses the Second battery power? I heard some cars like Bimmers become unusable if the battery is disconnected without a backup in its place because it messes with the computer memory.

 

[Rick12785]

I’ve only had my JL for 48 hours but haven’t had a problem with the ESS. I have a manual so I keep the clutch in at stop signs and lights.

 

[FatBoy01]

@BillyHW ... Shane looks to be about 30ish years old. He presented well and was very knowledgeable. He knew I was pretty familiar with the set-up in the JL, in regards to the aux battery, ESS etc.. I tried to get him to stumble by asking pointed questions and no, no stumble but direct knowledgeable answers to my questions, etc.. He seemed very, lets say, on top of things....

I actually mentioned to him, that a canuck on JL Wrangler forum was very worried about how the "Genesis" dual battery setup on the JL would perform. Anyway, he said to pass on that the "boost button" and all, with the JL, works flawlessly. He mentioned you will not find yourself in a position with the Genesis where your JL would not start. Again, we talked about the dead or missing aux battery and main does not start the JL. As I mentioned earlier when you install the Genesis set-up you no longer have that little aux battery..

You might consider emailing Shane.. He will undoubtedly will reply to your questions and concerns..

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