Single battery conversion?

JTDay

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When my battery goes kaput, I'll do the f42 fuse pull, 94R battery and route the cables appropriately. In my 6MT, 99% of ESS events occur while I'm still coasting to a stop at a light timing it so that I never come to a complete stop and thusly my truck turns off and within 1 second I'm clutching in and preparing to accelerate again. So interesting the way I drive makes ESS behave in a pretty stupid way.

The f42 fuse pull, cable reroute, and SSE seems like the best option to go single battery based on what the guy on the "other" forum has been working on.

 

WK2JT

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Do you have to run the bigger battery like the video shows? Or can I keep the existing battery and do the same thing?
Nah, it's just that the H7 will fit. A little more cranking amps is all.

I just took the aux battery out and wired it up to the original main battery. ESS constantly showed battery charging lately, so seeing if I caught it in time or if it killed the main battery already.
 

tonywin

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Nah, it's just that the H7 will fit. A little more cranking amps is all.

I just took the aux battery out and wired it up to the original main battery. ESS constantly showed battery charging lately, so seeing if I caught it in time or if it killed the main battery already.
Mine just says stop/start not ready with no messages so I’m probably going to delete the aux before it kills my main.
 

WK2JT

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I believe that cable COMES from the main battery. You'd just be creating a loop of the negative cable.
Thanks… I just taped it up. It wasn’t long enough on its own to reach the neg terminal. There is a nice gap behind the battery to tuck it in after taping up the end.
 

4S50

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A couple of days ago I got the ’ESS unavailable’ warning, although I never use ESS anyway. That was all the warning I needed.
Today I removed the small battery and also replaced the main with a fresh H7 AGM from O’Reilly’s. I took the m/c battery ground and ran it to ground lug on the fender, and bolted the positive lead to the positive lead of the primary batttery. An unexpected thing did happen though, my radio settings and garage door openers did not lose their memory.
 


QuintusMaximus

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Looks interesting
 

Hootbro

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An unexpected thing did happen though, my radio settings and garage door openers did not lose their memory.
When I did my full aux battery delete, had both batteries disconnected for at least 3 hours and still had radio memory retention. That tells me the radios has a decent capacitive memory built in.
 

tonywin

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A couple of days ago I got the ’ESS unavailable’ warning, although I never use ESS anyway. That was all the warning I needed.
Today I removed the small battery and also replaced the main with a fresh H7 AGM from O’Reilly’s. I took the m/c battery ground and ran it to ground lug on the fender, and bolted the positive lead to the positive lead of the primary batttery. An unexpected thing did happen though, my radio settings and garage door openers did not lose their memory.
Did you remove the fuse for ESS as well?
 

Towzone100

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I have a question. So on a 2021 JT Ecodiesel with the TOW package, to delete the UAX battery, do I need to reroute both the AUX battery neg and pos cables to the main battery or just the positive? Also, does anybody know if that affects the warranty?
 


Mr._Bill

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I have a question. So on a 2021 JT Ecodiesel with the TOW package, to delete the UAX battery, do I need to reroute both the AUX battery neg and pos cables to the main battery or just the positive? Also, does anybody know if that affects the warranty?
It depends on the dealer, but since you're making modifications to the factory electrical system they can deny any warranty claims for electrical issues.
 

Casique

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I'm going to wait till my warranty ends to switch to the Synergy se-up. And end the OEM battery nightmare threat...
 

Towzone100

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I'm going to convert mine tomorrow. I figure if I leave it as is and just reroute the AUX battery cable to the main that way I can always go back to the AUX if I need to put it in for service. I purchase Optima DH6 Yellow Top to replace the factory main battery.
 

tbaker

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Somebody post a video on how to do it or some after pictures after you hook everything up to the main battery

 

 
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