Anybody can do it - Replace Auxiliary Battery

[Ridge2Far]

I'm really liking the Harpy Eagle dolly that you also linked to. That one is on my Short List.

I’m also thinking the wider rollers and the spacing between them may work better with aggressive tread patterns as well.

Sponsored

 

[Jay_NM]

Just came here to congratulate you on using the combination jack/jack-stand unijack. I have two and it is safe and make quick work out of lifting the Jeep. I carry one in the Jeep instead of Hi-Lift.

Would you recommend the one pictured or this Jack? Seems like the second one is more compact for vehicle storage.

https://www.amazon.com/gp/aw/d/B0DFLTWZ99/ref=ox_sc_saved_title_2?smid=A1SVQ48Y6IVXV9&psc=1

 

[gato]

Would you recommend the one pictured or this Jack? Seems like the second one is more compact for vehicle storage.

https://www.amazon.com/gp/aw/d/B0DFLTWZ99/ref=ox_sc_saved_title_2?smid=A1SVQ48Y6IVXV9&psc=1

Definitely the style the OP used. For several reasons:
1 - It's hydraulic and very fast a couple of easy pumps and the Jeep is up in the air (vs hard turning a mecanical screw jack)
2 - The shave of the one pictured by the OP fits perfectly under the axle (or diff) in a stable manner with a \_/ shaped lifting end. Once lifted the vehicle can not slip.
3 - I like seeing a separate load mechanism from lifting (jack) to support (stand). The one the op used has that. The one you pictured, if that screw fails you are toast.
4 - The one the OP used (if its like mine) lifts the Jeep by up to 21" (very important if installing a lift, springs, etc). The screw one lifts only to 19"

I carry mine under the seat of my JLUR in a bar with a strap to hold it in place. It is rattle free.

 

[Jay_NM]

Definitely the style the OP used. For several reasons:
1 - It's hydraulic and very fast a couple of easy pumps and the Jeep is up in the air (vs hard turning a mecanical screw jack)
2 - The shave of the one pictured by the OP fits perfectly under the axle (or diff) in a stable manner with a \_/ shaped lifting end. Once lifted the vehicle can not slip.
3 - I like seeing a separate load mechanism from lifting (jack) to support (stand). The one the op used has that. The one you pictured, if that screw fails you are toast.
4 - The one the OP used (if its like mine) lifts the Jeep by up to 21" (very important if installing a lift, springs, etc). The screw one lifts only to 19"

I carry mine under the seat of my JLUR in a bar with a strap to hold it in place. It is rattle free.

On the Amazon reviews some people were reporting hydraulic fluid leaks with that one. Have you experienced this?

 

[dsgrey]

Why replace it? I bypassed it completely in like 5 minutes. You don't need the Aux battery.

I bypassed mine too but considering it's been 6 years, I plan to remove mine soon. Potential corrosion, battery possibly leaking, etc is my reason.

 

[Heimkehr]

I bypassed mine too but considering it's been 6 years, I plan to remove mine soon.
Potential corrosion, battery possibly leaking, etc is my reason.

I thought about that very thing. I bypassed my ESS battery only recently, though, so it's been dormant for only a few weeks now.

More to the point, I've had an exhausted generator battery (of a similar size to our ESS batteries) sitting in the garage for several years, using it as deadweight for gluing projects when required. That one never leaked or did anything else untoward, so I'm hoping that I can leave the isolated ESS battery in my Jeep undisturbed for a fair amount of time also.

 

[gato]

On the Amazon reviews some people were reporting hydraulic fluid leaks with that one. Have you experienced this?

I have not. I have two of them for a few years (there are a few variants, with slight different branding) - never had a problem with them.

 

[Trailrated]

Tire dolly well worth it for 60+ folks. Definitely worth it for those with back problems and handling 37" tires. Just have to find a place to store it or take it apart each time.
https://www.amazon.com/dp/B08H1CH16C?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_7

I don't see how that helps lift a tire up much. maybe a couple inches. I guess lower the jack enough to line the hub bolts up.

 

[Trailrated]

Well yesterday I replaced both batteries in my 2.0 L 2020 Rubicon JLU. My original batteries served me well - since 4/2020.

I’m 69, out of shape, been in treatment for Leukemia for two years and have limited hand tools and mechanical skills. Nonetheless, after the too many videos on how to do this, I figured it can’t be that difficult.

I decided to go the fender liner route because it seemed like this would be the path where I would have the least opportunity to screw something up.

Tire off, battery disconnected up top, small bit in the dremel tool and fender rivets were quick work, a few bolts at top of the liner - boom in a short time the auxiliary was out. One of those fancy battery powered ratchets would have been really nice, but still not much work by hand.

I did make sure both new batteries were fully charged before installation. Definitely the hardest part was getting the 35 x 12.5 tire back on. There must be a technique to this, but I obviously don’t know it.

Fender liner back on with Amazon rivets and a Harbor Freight rivet tool.

Point of this post is simply just about anyone can do this job.

That looks like a stock bumper, did it come with the little bull bar addition?

 

[PepperE]

That looks like a stock bumper, did it come with the little bull bar addition?

Stock steel bumper - the winch plate and bar came from Maximus 3. Also added their bar reinforcement brackets and filler plates around winch.

https://www.maximus-3.com/product-page/jljt-slp-hoop

 

[NewbJLUOwner]

Well yesterday I replaced both batteries in my 2.0 L 2020 Rubicon JLU. My original batteries served me well - since 4/2020.

I’m 69, out of shape, been in treatment for Leukemia for two years and have limited hand tools and mechanical skills. Nonetheless, after the too many videos on how to do this, I figured it can’t be that difficult.

I decided to go the fender liner route because it seemed like this would be the path where I would have the least opportunity to screw something up.

Tire off, battery disconnected up top, small bit in the dremel tool and fender rivets were quick work, a few bolts at top of the liner - boom in a short time the auxiliary was out. One of those fancy battery powered ratchets would have been really nice, but still not much work by hand.

I did make sure both new batteries were fully charged before installation. Definitely the hardest part was getting the 35 x 12.5 tire back on. There must be a technique to this, but I obviously don’t know it.

Fender liner back on with Amazon rivets and a Harbor Freight rivet tool.

Point of this post is simply just about anyone can do this job.

Love it
I just did my Aux replacement recently. It was difference from the OEM that was definitely defective.

 

[Trailrated]

Stock steel bumper - the winch plate and bar came from Maximus 3. Also added their bar reinforcement brackets and filler plates around winch.

https://www.maximus-3.com/product-page/jljt-slp-hoop

Sweet. Not sure that would work with my bumper. I got 24 Willys. No steel bumper :/

 

[Ridge2Far]

I don't see how that helps lift a tire up much. maybe a couple inches. I guess lower the jack enough to line the hub bolts up.

You can pivot the handle up and down and it will allow *some* vertical alignment, but it does require the wheel to be somewhat close to the proper height. The ability to roll the tire back and forth on the rollers is *very* helpful to index the holes to the studs.

 

[Heimkehr]

I don't see how that helps lift a tire up much. maybe a couple inches.

I guess lower the jack enough to line the hub bolts up.

Exactly, and just as the preceding post suggests. Why jack the tire higher than necessary? Set it to the proper height and let the tool do the work.

 

[zouch]

congrats; you got more life out of those Batts than many people (including me)!

did you consider doing the Aux Batt Delete? why did you decide not to?

tires; first, how are you liking those Mickeys? that's probably my next tire.
remounting; i only lift the vehicle enough to barely get a tire off the ground; about an inch. that way i don't have to lift it back up as far. (i balance the spare on the floor jack to get it almost high enough to put back on the spare mount; it's a short easier lift from there.)

Well yesterday I replaced both batteries in my 2.0 L 2020 Rubicon JLU. My original batteries served me well - since 4/2020.

I’m 69, out of shape, been in treatment for Leukemia for two years and have limited hand tools and mechanical skills. Nonetheless, after the too many videos on how to do this, I figured it can’t be that difficult.

I decided to go the fender liner route because it seemed like this would be the path where I would have the least opportunity to screw something up.

Tire off, battery disconnected up top, small bit in the dremel tool and fender rivets were quick work, a few bolts at top of the liner - boom in a short time the auxiliary was out. One of those fancy battery powered ratchets would have been really nice, but still not much work by hand.

I did make sure both new batteries were fully charged before installation. Definitely the hardest part was getting the 35 x 12.5 tire back on. There must be a technique to this, but I obviously don’t know it.

Fender liner back on with Amazon rivets and a Harbor Freight rivet tool.

Point of this post is simply just about anyone can do this job.

Sponsored