Jeep jl second battery location

In this video, I'm demonstrating how to replace BOTH batteries in a Jeep JL 2018 & up! There are 2 ways of doing this, one is removing the fuse box to get to...

Assuming the amperage is correct any of them should work. Basically it disconnects the battery from the winch unless the solenoid is engaged. The aux wires obviously are not stout enough to power things like a winch or air compressor. I never bothered, just ran it to the battery.But if you want to go the "disconnect the batteries route," assuming you have a 3.6L JL you need to do two things: 1) Disconnect all cables from the main battery's negative terminal, (which will still leave power on the ESS/Aux battery so step 2 is needed) and 2) Disconnect the cable from the main battery's negative group of cables that is …The 12v battery is not like previous JL batteries because it is bigger. In theory all the issues with dead batteries on older JLs should be gone. The 48 v lion battery is disconnected by theJeep electronics until the motor is started . Then the 48 v battery charges the 12v battery thru an dc-dc charger device.Jeep wrangler jku battery dead after 18 months - ocabj.netBattery dual install benchmark jeep jk forum wrangler Jeep jl wrangler battery techAux battery location ⚠️ jeep jl 2018 wrangler ⚠️stop start battery. Jeep jl battery issues 2Battery issues / no starting / lessons learned 2nd jl wrangler rubicon jlu sahara jlwranglerforumsHow ...First Name AC Abegian Joined Jan 9, 2022 Threads 67 Messages 897 Reaction score 472 Location Los Angeles Vehicle(s) 22 Jeep Wrangler diesel Sahara Altitude , 94 MKIVSteph, I noticed above that you said you have to remove the fender to get to the second battery. Not sure why this is the case on your Jeep, but if you remove the main battery, the second one comes out quite easily after that. To the solution. My main goal in this is to keep everything as standard as possible.

I'm in need of guidance on the charging of a secondary battery in the bed of the truck and running power from that second battery instead of straight from starter battery. Lets say i want to run a 3000watt inverter in the bed of the truck but that requires a 4/0 gauge wire run all the way to the starter battery (only using it at 3000watts when ...If you want to change out your auxiliary battery on your Jeep Wrangler JL or Jeep Gladiator JT without going to the dealer, its completely possible and witho...Jeep Wrangler Rubicon Unlimited Feb 8, 2018 #2 I think it runs off the main battery on the 3.6. OP . OP. TIDALWAVE Well-Known Member ... I want to know where in the JL is the ESS battery located physically! offcamber. Banned Banned. Banned. First Name Bob Joined Aug 7, 2017 Threads 36 Messages 1,073 Reaction score 1,455 Location Dallas, TX ...aldo90731. 15869 posts · Joined 2009. #3 · Mar 5, 2023. Welcome to the forum. Most likely your batteries are bad, period. Leaving it parked in reverse had nothing to do with it. If the Jeep still has the original batteries, replace both of them with an aftermarket brand. No need to buy anything too fancy.Connects batteries together in parallel while driving, then separates them once the voltage drops below 12.7v to protect your cranking battery from getting drained by your accessories. Rated for 300 amps continuous current flow, and spikes of up 2500 amps for 10 seconds to handle anything you can throw at it.If this battery lacks adequate power, if you are operating a 3.6L JL on or after 2019 (and at least with respect to the model year you are) you vehicle will not crank, but upon second attempt it will switch over to the main battery and attempt the crank. If successful the vehicle will disable ESS, and tell you so in the diagnostic panel--a good ...Your dealer is an asshat. first, raise holy hell with the service manager and then the GM and then find the ownership group and raise holy hell with them second, get with JeepCares third, call FCA and tell them what your dealer has done. fourth, never, ever, ever, go back to that dealer and, assuming that your story Is 100% true — no embellishment, no fibs, no shades of grey, , post the ...

May 22, 2020 ... HOW TO Replace the Main and Auxiliary Battery on a Jeep JL Wrangler and JT Gladiator Truck. Wayalife•367K views · 11:30 · Go to channel ...Then go ahead and add the top strap that holds it down to the all thread, then put the remaining nuts on, and tighten them; then go ahead and tighten the bottom nuts that you left loose earlier. Now install your secondary battery cables. You should only have two 1 gauge cables left. One black one and one read one.Thread starter. #1. Well the known secondary battery issues wreaked havoc on my Jeep during a Rally competition. It malfunctioned and siphoned all the power from my large battery, causing my Jeep to literally die without warning numerous times throughout the rally. I am so disappointed, as it impeded my ability to effectively compete.Oct 14, 2023 ... HOW TO Replace the Main and Auxiliary Battery on a Jeep JL Wrangler and JT Gladiator Truck. Wayalife•367K views · 6:15. Go to channel ...Oct 9, 2021 · Went to replace the batteries in 2018 Jeep Wrangler Rubicon JL with the 2.0 liter engine and auto trans. and found out mine didn't have the second battery in it. It has the box it sets in but no battery or leads. Replaced the main battery and now my power steps won't retract. They start to then...

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WK2 - New battery type and location. An AGM battery is a sealed unit that uses special relief valves to vent vapors from the battery. The electrolyte is stored in sponge like separators consisting of matted glass filters. This suspension increases the efficiency of the charging and discharging rate of the battery.If have to reprogram the Jeep to sync with the new TPMS's..how do(or did) you do it?! Sponsored . Goin2drt Well-Known Member. ... Is this not the case on the jl? Sponsored. Shooting or Jeeping Well-Known Member. Joined May 27, 2018 Threads 37 Messages 936 Reaction score ... Location Katy Texas Vehicle(s) 2018 Wrangler JLU Sahara Occupation Gas ...It is always good to have a secondary battery installed in your JL Wrangler just so to prevent your main battery from draining when numerous accessories are ...Having your Jeep battery die really isn't that big of a deal, especially if you have a set of jumper cables handy and another vehicle near by that's willing ...Location San Diego Vehicle(s) 2021 Wrangler Sahara Altitude, 2019 M5, 2017 LX570 ... You have a large 48v battery mounted under the Jeep on the driver's side. Technically your 12v battery is the secondary battery as there is no alternator. ... which also didn't exist in the carb days. ESS will never run the battery dead in a JL. It will stop ...Thread starter. #1. Well the known secondary battery issues wreaked havoc on my Jeep during a Rally competition. It malfunctioned and siphoned all the power from my large battery, causing my Jeep to literally die without warning numerous times throughout the rally. I am so disappointed, as it impeded my ability to effectively compete.

Removing this fuse defeats the cold start aux battery test and allows the aux battery to be disconnected without generating any errors. Unplugging the PCR has always been an alternative to using an N1 N2 fused jumper, both methods defeat the aux battery pass/fail test that occurs prior to a cold start.Location Honolulu Vehicle(s) 1997 Cherokee sport, 2021 4xe rubicon Dec 10, 2021. Thread starter #3 ... I'm wondering if the second battery is bad. For it to be that dead you'd have to kill both batteries. Sponsored. mllcb42 ... No all JL Jeep's have 2 batteries. There's a battery under your normal battery.I’m in the process of changing my batteries due to them always dying. May anyone help me by identifying the main battery & aux battery size for a 2019 Jeep Wrangler Unlimited Sahara JL engine size is 3.6L. Your I appreciate anyone’s help.The PCR is located behind the front passenger side tire, and it is discussed in this thread. …Location Ontario Vehicle(s) Jeep Wrangler JL Apr 12, 2021. Thread starter #1 ... Second, it may not be the Aux battery, or only the Aux battery. Third, at least if you were running a 2018 3.6L JL, that model year would not crank at all if the Aux battery lacks adequate charge. ... this is just my experience for my Jeep and aux battery - yours ...When you need to locate a dealer that sells or services Jeep vehicles, there are a few ways to find one. You can search through the Jeep website, a partner website, online sources ...Disconnected battery to change the dash out. When trying to reconnect, the neg side is sparking when I try to connect it. ... i thought I somehow fried my jeep (everything is working fine). caleb_m00re Well-Known Member. First Name Caleb ... Location Iowa Vehicle(s) 2018 JLU, 2019 KL, 2020 JT Dec 3, 2020 #13 HoundDude said:The second battery continues to power your accessories for as long as it will last. After you crank the vehicle, your main cranking battery will be charged up to 13.2 volts first, and then the isolator will begin charging your accessory battery. ... Fits 2018 and up Jeep Wrangler JL. Requires 2 identical Group 25 size batteries, sold separately ...

Jeep Wrangler JL Overland Oct 22, 2021. ... Location Springfield, Mo. Vehicle(s) 2021 Rubicon Unlimited, & Escalade ... what is the easy way to know if your JL has the second battery set up? Any help greatly appreciated. AU_JLU Well-Known Member. Joined Oct 3, 2019 Threads 1 Messages 78 Reaction score 26

Location Denver Vehicle(s) 2021 JLUR, 2021 GCL, 1997 TJ, 1983 Chief FSJ ... the 48 volts is stepped down to 14.2 volts and supplies the Jeep battery with a charge. If the engine is not running, no charging voltage is supplied. This is a function of the 48 volt battery module. ... How the JL & JT '21 3.6 Etorque battery system really functions ...I just wanted to know, if my battery voltage is normal? In the morning (1st start up, voltage is 13.5v-14.5v) As im driving it dips to 12.5v-12.7v. ... Location Canada Website litwphoto.com Vehicle(s) 2019 Wrangler Unlimited Sahara Build Thread Link Occupation ... 2018 Jeep Wrangler JL Sport S Unlimited May 17, 2023 #6 JLsport2019 …We got out first Jeep Jl wrangler with a 2.0L turbo. I'll give you a first look at the 48v mild hybrid system and a test drive at the end.https://www.jeepinf...Just do the 12v one you can see. After completing the part swap reconnect the battery and if the CEL is still there, clear it with the programmer of your choice. If they are asking people to mess with that big battery there is some serious concerns they should be considering. Playing with a 12v battery is one thing and still requires caution.This first post will serve as a quick reference and I'll use the second post to provide more details. JL Wranglers with the 3.6L ESS have 2 batteries, the Main battery that you see in the engine compartment and an Aux battery that is hidden underneath the Power Distribution Center. Each battery powers separate systems during an ESS auto stop.2021 JL Sport, 9,500 miles. battery save mode come on and Jeep died shortly after and wouldn't start again. ... 9,500 miles. battery save mode come on and Jeep died shortly after and wouldn't start again. ... If you have the TSB or running later model years the second attempt at cranking should switch over to the main battery and disable ESS in ...Thanks for the input! At first when this happened and I came back to a dead auxillary battery, I figured that I could drive without it. At some point the main battery went dead after that. When I asked at the dealership whether driving with a dead aux battery could drain the main, they said that it was a possibility.Check a 12-volt battery by disconnecting it from the device it powers, take an initial reading, charge it and take a second reading after the battery sits. Reconnect the battery, a...Simply cut both cables off enough to get to unmangled wire then strip the insulation back about 1". Loosen the 2 small bolts on the lug and lift the clamp plate then insert the freshly stripped cable ends under the clamp and tighten the 2 bolts back down. Also make sure the lug is tight on the battery and viola you're good to go.Location Ms Vehicle(s) 2018 jeep wrangler jl Dec 4, 2023. Thread starter #1 hey everyone! I was driving my jeep today and my jeep will not come out of second gear! It will just randomly shut off! Husband is really mad cause we keep having so many problems. ... The battery is brand new so after I hooked up the battery again cranked the Jeep ...

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How to install the Genesis Offroad Gen 3 dual battery system for the gas engine Jeep JL & Gladiator. The Gen 3 version of our dual battery system was release...I have a 2022 Rub JL and Dealer, just installed the 3rd small battery and 2nd main battery. Once mine is out of warranter, I will remove the 2nd battery and just run one main battery. Very frustrating having a new Jeep. It freaks out when it will not start (wiper run, dash binks, gauges go up and down), have to jump with a semi-truck jump …Connects batteries together in parallel while driving, then separates them once the voltage drops below 12.7v to protect your cranking battery from getting drained by your accessories. Rated for 300 amps continuous current flow, and spikes of up 2500 amps for 10 seconds to handle anything you can throw at it.A quick video of how we setup our power system in our Jeep Wrangler JL. As full time travelers, we needed a simple yet reliable power setup. We were able to ...If you want to change out your auxiliary battery on your Jeep Wrangler JL or Jeep Gladiator JT without going to the dealer, its completely possible and witho...In addition to housing the compressor switch, breathers, and air chuck out of the way, the AAL remote kit adds a 12V plug for your fridge and a six-way ATC fuse block with a negative bus. This ...2020 JL 2.0. Main battery died last week, and changed it and the aux (at 3 years anyways). Utilized the "removing PDC" route for aux replacement. Job went fine and cranked right up. Took a drive with no issues. Shut down for the night. Went to crank it this morning and it turned over but would not fire. Checked codes. See attached image.2018 jeep wrangler jl Feb 20, 2023 #11 ... Extra battery weight located low and center of the vehicle; ... This kit's second battery and power hub just consume way too much interior space. I do appreciate the detailed explanation in this thread but the design is a show stopper for me. Instead, I'll go without dual batteries and run a ...#1 · Mar 16, 2022. Must be my turn to have the battery issues. 2021 JLUR and it has been flawless (so far) with only 3900 miles. My stop-start has worked as it should until now. …WK2 - New battery type and location. An AGM battery is a sealed unit that uses special relief valves to vent vapors from the battery. The electrolyte is stored in sponge like separators consisting of matted glass filters. This suspension increases the efficiency of the charging and discharging rate of the battery.The battery in a BMW X5 is located under the spare tire in the center of the trunk. To find the battery, lift the carpet in the trunk, remove the spare tire, remove the three 13 mm... ….

I've recently picked up a gremlin with my passive entry not working. Touching the front doors or tailgate no longer unlocks the Jeep. Using the button on the fob does. Once in the Jeep, pressing the START button results in "Key Fob not Detected". Holding the fob to the button works, as does holding the fob against the top of either B-Pillar.Dec 13, 2022 ... Take a close look at the Genesis dual battery system for the diesel and 392 Jeep Wrangler JL. Shane walks you through all the components ...This is my second JL. My old Sport would start at around 13.8 and drop after some driving (30 -1hr) to 12.8 to 13.2 area. ... A quick update for this afternoon. On the way in this morning, the Jeep showed the "ESS not available... battery charging." message. ... I have ESS disabled using a Smart Stop/Start module as I truly dislike ESS but I ...In this video, you’ll get to see just how easy it is to replace the main battery AND what all you’ll need to do to replace the auxiliary one. We hope it helps you out. HOW TO Replace the Main and Auxiliary Battery on a Jeep JL Wrangler and JT Gladiator Truck. Watch on. Type S Jump Starter: https://amzn.to/31fyFRI.I'm in the process of changing my batteries due to them always dying. May anyone help me by identifying the main battery & aux battery size for a 2019 Jeep Wrangler Unlimited Sahara JL engine size is 3.6L. Your I appreciate anyone's help.i have a 2021 also i heard nothing but failure stories about the second buttery so i bought a gennis 2 and two full throttle batteries . i installed and found out i didnt have the second battery. no matter now i do. install went great put my mind at ease .only thing had a rattle ,found the steel mounting plate that i installed needed a couple large rubber gromets under the plate to keep the ...Test & Guide! In this video, I'm demonstrating how to replace BOTH batteries in a Jeep JL 2018 & up! There are 2 ways of doing this, one is removing the fuse box to get to the auxiliary...How to delete the aux battery in JL and JTLocation USA Vehicle(s) Jeep Oct 26, 2020 #8 ... a 2018 3.6L JL[U] to crank even if its ESS/Aux battery failed to meet voltage thresholds for the vehicle to attempt the crank (which is otherwise energized by both batteries). ... running down the main and boosting from the second battery and it's all been 100% solid and it just seems like a ...Tried jumping again and could not get the car started. Would not jump start. I guess the battery was really dead. I had it towed home. The next day I replaced only the main battery with a new fully charged battery. I also charged the smaller secondary battery. Have not replaced the second battery yet. The 2018 jeep JLU started normally. Jeep jl second battery location, A DC to DC inverter seems ok for charging a battery at the rear of the truck since that battery will never charge the same as up front using an isolator due to the long cable lengths and loss to the rear. Slight problem is the DC converter is not 100% efficient and will take more power to charge the battery than the battery gets during charging., 15863 posts · Joined 2009. #2 · Jan 23, 2023. If you have the eTorque version of the engine, instead of the auxiliary battery behind the fender, you got a giant Li-Ion 48V battery; it is tucked under the floor of the rear seat I believe. 2023 Jeep Gladiator Rubicon + 2018 Fiat 124 Spider Abarth. Owned nine Jeep Wranglers and two Grand Cherokees., When a Jeep Wrangler JL/JLU has E-torque, then you only have one Battery. With no E-torque, then you have a main and aux Battery. This also is applicable, to different year JL/JLU's. ... Etorque has a main batter in the normal location in the engine bay + a 48v battery located where it's noted in the above picture. Also the 48v battery is a ..., Nov 2, 2020 · The 2nd battery is a true backup. No loads connected to it unless I need it to start the jeep and it is disconnected from the primary battery if the ignition is off. When ignition is on and alternator voltage is above 13.2 volts the backup battery is charging. Flip a switch to connect the backup battery and start the jeep. , What's up everybody!This video covers a potential cause of a NO-start condition (just cranking) on a JL 2018-2023 Jeep Wrangler! Keep in mind this is in rega..., Location Dallas, Tx Vehicle(s) 2020 JLU Rubicon Recon, 2021 JLU Rubicon Mar 20, 2023 #2 ... '18 JL Rubi, '22 Prevost M H3-45,'01 Harley FatBoy Mar 20, 2023 #4 ... You can disconnect the ground cable the goes from main battery negative terminal to the body at the body. With the newer cable configuration, you can also disconnect this cable at the ..., Location Colorado Springs, Colorado Vehicle(s) 2019 Wrangler Unlimited Rubicon Occupation Retired Jul 18, 2022. Thread starter #1 Hi! My first post here. I'm planning on replacing the 12-volt battery on my 2019 Rubicon Unlimited tomorrow and was wondering if there are any unique procedures on a battery replacement for this mild hybrid? I've ..., Jul 18, 2019 · 2018+ JL BATTERY DISCONNECT FOR BOTH BATTERIES When servicing the 2018+ Jeep JL 3.6, BOTH batteries must be disconnected. The primary battery terminals will still be hot unless this procedure is followed. First disconnect the ground on the primary battery Then disconnect the 3 ground wires on the fender. G-07.18.2019 , Location Lafayette, la Vehicle(s) Jeep JL 2018 Nov 18, 2018. Thread starter #1 I bought my JL in July. ... for a rental out of pocket and when I bring it in again for this issue it will be the 5th day in three weeks without my Jeep and the fourth day (two days for battery, two days for engine light) I have to take off of work for this. ..., Location Murphy, NC Vehicle(s) 2018 JLU Sahara, 2003 F150 S-Crew FX4, Others ... Disconnect the negative cable from the battery when the Jeep sits for longer than a week. It's a hassle, but it's better than coming back to a dead battery. ... single battery JL like your old TJ, JK, your old Chevy with their single battery. Yes, still maintain ..., I'm in need of guidance on the charging of a secondary battery in the bed of the truck and running power from that second battery instead of straight from starter battery. Lets say i want to run a 3000watt inverter in the bed of the truck but that requires a 4/0 gauge wire run all the way to the starter battery (only using it at 3000watts when ..., What I did was create a load on the battery (around 40 amps for about 1.5 hours) to get it drained to almost nothing. In the case of this test the voltage was just over 10v and the SOC as reported by the IBS was 11%, that is a very dead battery and likely would not start the engine. For this test my HV battery had a 100% charge., I've seen some debate as to how to hook up your winch to the battery, specifically which pole the (+) connection should go on. What's everyone's opinion on... Menu. News. ... 2019 Jeep Wrangler Unlimited Rubicon Feb 19, 2020. Banned #2 ... Location Central Ohio Vehicle(s) 18 JLR 2 Door, 21 JLU TD, 06 GC, 54 Willys SW Occupation Retired, W8BWD, Apr 28, 2022 · If you want to change out your auxiliary battery on your Jeep Wrangler JL or Jeep Gladiator JT without going to the dealer, its completely possible and witho... , The standard main starter battery without a tow package is something like 650 CCA and the Aux is 200 CCA-so a Diehard AGM battery is rated at 850 CCA-which covers all the bases if you still want the stop/start system to work and better yet if you eliminate the stop/Start with this $39.00 plug in. Citreal Autostop Eliminator for Jeep Wrangler ..., There is not an immediate impact when the N3 fuse blows, but the aux battery and system electronics are now isolated from the alternator and the main battery. Everything will work as normal until the aux battery no longer has enough charge left to power up the electronics, resulting in the flashing system electronics and an inoperative jeep., IBS Testing I have conversed with Jerry @Jebiruph on this thru a few PM's and then proceeded to let my OCD rule my life and started digging to get some info with some testing of course. As most are aware the JL like most newer vehicles uses a IBS/IBM ( Intelligent Battery Sensor/Intelligent Battery Management Sensor) that's mounted to the negative terminal on the main crank battery but in ..., About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ..., Troubleshooting 2021 JLUR Battery Issues. Must be my turn to have the battery issues. 2021 JLUR and it has been flawless (so far) with only 3900 miles. My stop-start has worked as it should until now. Nothing has changed as far as I can tell, but the stop-start has not worked for 2 days in a row. The battery gauge shows 14.2-14.3 all the time., Here in IA batteries usually last 3-5 years depending on the vehicle and quality of battery. But what I learned from another Jeep forum when I bought my JK is that it's extreme heat that kills a battery quick, not cold. So you guys in TX, AZ, Las Vegas, etc. may find that 2-3 years out of a battery is more typical., New battery, need some CCA, factory location. Battery in the Jeep is an Interstate Megatron II from 2010, 550 CCA and it's on it's for real last legs. Need something with some more CCA and have looked at some group 65's that will fit but they are only up into the 800CCA range. Would prefer something closer to 1200CCA but have been unable to ..., e torque is a 48v liquid cooled battery pack located under the jeep. This controls ESS electronic start/stop as there is no alternator. These vehicles have a belt start generator that provides the initial ( and I mean fraction of a second) turn of the wheels before the engine kicks on., Nov 2, 2020 · The 2nd battery is a true backup. No loads connected to it unless I need it to start the jeep and it is disconnected from the primary battery if the ignition is off. When ignition is on and alternator voltage is above 13.2 volts the backup battery is charging. Flip a switch to connect the backup battery and start the jeep. , From what I understand, the main battery and Power Distribution Center (PDC): the intelligent fuse box switch places in the diesel JL as opposed to say the 3.6L JL. I mean it would make sense if the Aux battery stays in the same place on the Eco Diesel model, and just the main battery and PDC switch places., Did you know the 2018 Jeep JL Wrangler 3.6 has two batteries. I will show you where the Stop start battery is and how to disconnect Incase you need to make repairs to the Electrical System..., I bought it with the modifications made by the previous owner, who was really the second owner. (The bought it used did the mods, then sold.) They include a 3" lift with 35s, steel bumpers, increased suspension to go with the lift, a dual battery system, and some other things that, when compared with other customized Jeep, aren't that crazy., Also, you can enter the "Enginnering Menu" and can do a factory reset and other things 1) Hold hot and cold physical buttons on the dash at the same time for 5 seconds when the car is running 2) Select "Reset to Factory Defaults" Oviously all settings, pairing, radio stations etc will be lost. EDIT: Word of warning, there's a risk of loosing Navigation., PARTS:Batteries - https://amzn.to/3SPvjMNDC-DC charger - https://amzn.to/3CmZq8V25ft 6g wire - https://amzn.to/3STqkLb6g lugs (x2 minimum) - https://amzn.to..., Location MINNESOTA Vehicle(s) 2015 Mustang GT Convertible, 2013 CHEVY SILVERADO, 2018 JLUR ... temporarily isolates the JLs two batteries and no crank will even be attempted if the JL's ESS battery isn't showing a basic level of "juice." I don't think the wait time has much to do with the engine/generator of the running rig charging its battery ..., Then go ahead and add the top strap that holds it down to the all thread, then put the remaining nuts on, and tighten them; then go ahead and tighten the bottom nuts that you left loose earlier. Now install your secondary battery cables. You should only have two 1 gauge cables left. One black one and one read one., I'm in need of guidance on the charging of a secondary battery in the bed of the truck and running power from that second battery instead of straight from starter battery. Lets say i want to run a 3000watt inverter in the bed of the truck but that requires a 4/0 gauge wire run all the way to the starter battery (only using it at 3000watts when ..., I'm glad you understand the basics (of the 3.6L JL) of the batteries. The engine crank is actually done by both batteries, ESS/Aux and main. This is why you could disconnect the main battery on a working 3.6L JL and still get your rig to crank if the ESS/Aux battery has the power--which when working well and fully charged it will. The jumpering of N1 and N2 merely makes the two batteries in ..., Hey guys, first post on the forum. I picked up an '18 JLUR a couple of months ago with 24k on it. A couple times I noticed when I hit the start button, it wouldn't start, then it would after 2 or 3 tries. Well this morning it wouldn't crank at all after sitting about a week. So I checked...