Jeep Wrangler 4xe Forum banner

1 - 14 of 14 Posts

·
Registered
Joined
·
15 Posts
Discussion Starter · #1 ·
I know, crazy topic but bear with me a second. The 800 lbs in batteries push the limit when flat towing the 4xe. I've been thinking of all these ways to strip weight when a simpler solution dawned on me. If I remove half, or all of the batteries when I'm going to tow, will the 4xe run fine on gas only?
 

·
Registered
Joined
·
41 Posts
I know, crazy topic but bear with me a second. The 800 lbs in batteries push the limit when flat towing the 4xe. I've been thinking of all these ways to strip weight when a simpler solution dawned on me. If I remove half, or all of the batteries when I'm going to tow, will the 4xe run fine on gas only?
With all due respect and assuming you are asking an honest question and not trying to pull our chain. I had a few minutes, waiting on the wife, so here it goes....
Removing the high voltage battery would be:
Extremely difficult. Extremely difficult. Near impossible for an amateur, without large wire cutters.
‘Very time consuming.
A job Not suited for a non trained Jeep Technician
once you get it unhooked, how are you going to get 800# out of the back seat? How many friends do you have?
How will you recalibrate the computer to run on the engine only?
Where will you store the battery? Leave at home? Store it in the RV?
‘Heck, I have a hard time storing my folding bikes in my RV and they only weight 67#

So, my suggestions to you, not in any particular order:
1. Trade in the 4xe for a non-hybrid Jeep, simplest thing to do, I’m sure there are plenty of folks wanting to buy a 4xe.
2. Get a BIGGER tow vehicle with at least 10,000# tow capacity. 7500# tow capacity will probably do, just stay away from Colorado, Idaho, Montana, etc.
3. Or strip the doors, the top, the bumpers, pull out the backseat, leave the spare at home, that still might not do it.

Good luck with your project. Please let us know how it turned out.
‘Yes, I was bored.
 

·
Registered
Joined
·
15 Posts
Discussion Starter · #3 ·
Being new to Hybrids (definitely not new to engineering though), it was a serious question. I looked at it more this morning and it looks like a single battery sealed in a waterproof case. I had assumed it could be like some hybrids where multiple batteries were in series and a few could possibly be removed with a hydraulic lift. The hybrid is great for the daily 25 mile round trip to work but working on ideas for towing on a few trips a year.

I'm upgrading the tow hitch now as I can tow around 6500 lbs but the hitch is only rated at 5000. Already been working on tube doors, a soft top, and removing the spare tire. It looks like I'll continue on that path! The Rubicon is 5200 lbs before modifications so I'll be taking it to the scale to get weighed after making a few more changes.
 

·
Registered
Joined
·
77 Posts
Being new to Hybrids (definitely not new to engineering though), it was a serious question. I looked at it more this morning and it looks like a single battery sealed in a waterproof case. I had assumed it could be like some hybrids where multiple batteries were in series and a few could possibly be removed with a hydraulic lift. The hybrid is great for the daily 25 mile round trip to work but working on ideas for towing on a few trips a year.

I'm upgrading the tow hitch now as I can tow around 6500 lbs but the hitch is only rated at 5000. Already been working on tube doors, a soft top, and removing the spare tire. It looks like I'll continue on that path! The Rubicon is 5200 lbs before modifications so I'll be taking it to the scale to get weighed after making a few more changes.
Might be possible to remove some cells as long as the voltage remains in the same range. The cooling plate sensors would need to be recalibrate so the cooling system doesn't malfunction. And any warranty would be voided immediately of course.

Anything is possible but the risk/reward factor is definately not in your favor here. I recommend you leave the HVB as is and accept the weight penalty.
 

·
Registered
Joined
·
4 Posts
No. Will not run without the HVB.
No way to start the engine.
These tow fine. Only 1600 lbs but I didn't even feel the trailer behind me half the time.
Max Regen is awesome when towing. I don't even have a trailer brake controller installed yet and it did just fine.
I think he wants to tow his jeep behind a motorhome or something of the sort.
 

·
Registered
Joined
·
41 Posts
I'm upgrading the tow hitch now as I can tow around 6500 lbs but the hitch is only rated at 5000. Already been working on tube doors, a soft top, and removing the spare tire. It looks like I'll continue on that path! The Rubicon is 5200 lbs before modifications so I'll be taking it to the scale to get weighed after making a few more changes.
The day I took delivery of my 4xe Rubicon, with no aftermarket equipment, no persons or dogs inside and a full tank of gas.
Front axle. 2680#
Rear axle. 2680#
Total weight, 5360#.
‘A copy of the weight ticket is on another thread.
They will install my winch, lights, etc. next week. I will go weight it then and report the Loaded weight.
 

·
Registered
Joined
·
15 Posts
Discussion Starter · #9 ·
The day I took delivery of my 4xe Rubicon, with no aftermarket equipment, no persons or dogs inside and a full tank of gas.
Front axle. 2680#
Rear axle. 2680#
Total weight, 5360#.
‘A copy of the weight ticket is on another thread.
They will install my winch, lights, etc. next week. I will go weight it then and report the Loaded weight.
Interesting, that's 140 pounds over spec. Doors + Hard top + Spare is around 450 lbs but I'm adding tube doors back on so that'll add some weight back. I still end up around 5000 pounds at best. Mine had a Mopar lift done by the dealer with 37" tires so I'm sure that drove it up some as well.
 

·
Registered
Joined
·
2 Posts
No. Will not run without the HVB.
No way to start the engine.
These tow fine. Only 1600 lbs but I didn't even feel the trailer behind me half the time.
Max Regen is awesome when towing. I don't even have a trailer brake controller installed yet and it did just fine.
The engine does not run off the battery pack, open the hood, there is a standrard battery for the engine.
 

·
Registered
Joined
·
77 Posts
The engine does not run off the battery pack, open the hood, there is a standrard battery for the engine.
There is not a 12v starter on the engine. Instead, it is started with the MGU1 bolted to the engine block (what Mopar calls "eTorque"). That motor is powered by the HVB.
 

·
Registered
Joined
·
41 Posts
Interesting, that's 140 pounds over spec. Doors + Hard top + Spare is around 450 lbs but I'm adding tube doors back on so that'll add some weight back. I still end up around 5000 pounds at best. Mine had a Mopar lift done by the dealer with 37" tires so I'm sure that drove it up some as well.
The factory weight is a dry weight. No gas, no coolants, oil, etc. The gas alone is 17 gal x 6 #/gal = 102#.
5360 - 102 = 5258#. I have no idea what the rest of the fluids weight, but 58# is possible.
So DRY WEIGHT for the Rubicon could easily be 5200#.
 

·
Registered
Joined
·
15 Posts
Discussion Starter · #14 ·
That could explain the difference. I had read it was a curb weight which included half tank of gas and other needed fluids.
 
1 - 14 of 14 Posts
Top