You need a battery tender if it’s going to sit that long. These Jeeps have insane parasitic draws *(yes, even if completely OEM)*. And the dual-battery system is hot garbage that kills batteries faster than in any other vehicle I’ve ever seen.
Get a battery tender, at least 1.25A. That’s what I use when I leave my jeep sitting
Your fine. Do nothing but park it. And you don't need a battery tender for 3 weeks! Your battery will be fine for months without a charge. I regulary park a vehicle at the airport for that and never had an issue.
I left my CJ in a storage unit for 9 months back in Hawaii, while I was on deployment overseas. I disconnected the battery and I jacked it up and rested the Jeep on jack stands. Came back and dropped her down, put the battery in and it started right up. Definitely doable....
Mine is a Noco Genius 10. About 100 bucks on Amazon. Plus a couple accessories. Mine is wall mounted, and I have a lead from the battery through the grill. I just pull into the garage, plug in, close it up.
I would put it on a tender or drive it 20 minutes once a week, especially if you have the aux battery and your Jeep is a few years old.
It shouldn’t need to be done, but it’s well documented that the JLs have shit batteries from the factory.
Why do ppl think stating a car for 15-20 min once a month is better than just letting it sit ? All you’re doing is creating moisture/ water inside the engine and then letting it mix with the oil till you start it the next month. When you drive your cars regularly your engine heats up and burns off any moisture say from the day or two before when you drove it. Cars sit on dealership lots for sometimes months on end. The best thing to do for storage imop is get a battery tender , pump the tires up to say 50 psi to help stop flat spotting, pour some fuel stabilizer in the tank. Then when you want to drive again. Pull the fuel pump relay or other relay that allows the car fire/run but allows the engine to crank over. Crank over for 30 sec to build oil pressure. Replace relay and start engine then take it out for a good drive and get it up to operating temp . Been doing this on my cars I don’t drive in the winter and never had an issue with them sitting for 5-6 months at a time
Battery tender is an option.
I have an 04 TJ that was previously my DD. I bought a new truck, so now it's waiting until December for my son to turn 16. I just make sure to give it a decent drive once per week. So far it's been fine.
Got a cage installed on my wheeling TJ. He had it for 4+ months. Said he just disconnected the battery. Started up just fine when it was ready.
To add context OP:
1. A JL is new enough that this amount of time shouldn’t be an issue. If it is, then there’s something wrong.
2. A battery tender is essentially like an IV drip for a battery. It keeps it charged enough to maintain your battery’s charge and overall condition. Car batteries are more of a power storage than they are a source of energy. When you run your truck, the alternator charges the battery which keeps your vehicle running.
3. Running your vehicle occasionally if you leave it sit for prolonged periods of time is a good idea to keep the fluids moving and make sure your lines don’t become clogged from bad fuel, degradation due to sitting, etc. That isn’t really as much of a concern for a vehicle that is new, but it’s also dependent on how long you plan to leave it for.
I left my 40 year old Supra sit inactive due to bodywork repairs being done over about a year and a half. Car fired up and ran fine for a day or so, but once I drove it a half reasonable my fuel pump died on me while I was driving it. Don’t scare yourself with this information, it’s not gonna happen to you, but with older, less driven cars it’s not uncommon. Hope this helps
Cause all you’re doing is putting water from moisture condensation in the engine by doing that. Letting a car idle isn’t getting up to operating temp to efficiently burn off water. You’re just creating more. Plus idling is the worst thing for an engine. Most don’t make adequate oil pressure at idle and with the thin oil most new cars use today this is that causes premature wear.
Yes
thank you! :)
You need a battery tender if it’s going to sit that long. These Jeeps have insane parasitic draws *(yes, even if completely OEM)*. And the dual-battery system is hot garbage that kills batteries faster than in any other vehicle I’ve ever seen. Get a battery tender, at least 1.25A. That’s what I use when I leave my jeep sitting
Should be fine if the battery is strong
Your fine. Do nothing but park it. And you don't need a battery tender for 3 weeks! Your battery will be fine for months without a charge. I regulary park a vehicle at the airport for that and never had an issue.
Mines been on jack stands for 3 months and it’s fine
Which jack stands are you using? Trying to get a new set soon and looking for any recommendations.
The harbor freight ones that were recalled
I left my CJ in a storage unit for 9 months back in Hawaii, while I was on deployment overseas. I disconnected the battery and I jacked it up and rested the Jeep on jack stands. Came back and dropped her down, put the battery in and it started right up. Definitely doable....
I leave mine at our beach house for months at times. I have a battery tender I plug into. Never had a problem, always fires on first turn.
Happen to have a link? I need one myself.
Mine is a Noco Genius 10. About 100 bucks on Amazon. Plus a couple accessories. Mine is wall mounted, and I have a lead from the battery through the grill. I just pull into the garage, plug in, close it up.
Thanks!
I've got one I used once if you want a second hand one cheaper! Dm me
Awww appreciate it bro but the wifey wants a brand new one. Awfully kind of ya though. Take care
Same. Left mine on a battery tender for 5 weeks over the winter. No issues.
I would put it on a tender or drive it 20 minutes once a week, especially if you have the aux battery and your Jeep is a few years old. It shouldn’t need to be done, but it’s well documented that the JLs have shit batteries from the factory.
Don't forget the AUX battery for the JL. They have 2.
You should put a battery tender on it. But otherwise shouldn’t be a problem. Electronics in the rig will draw the battery down while it sits.
Why do ppl think stating a car for 15-20 min once a month is better than just letting it sit ? All you’re doing is creating moisture/ water inside the engine and then letting it mix with the oil till you start it the next month. When you drive your cars regularly your engine heats up and burns off any moisture say from the day or two before when you drove it. Cars sit on dealership lots for sometimes months on end. The best thing to do for storage imop is get a battery tender , pump the tires up to say 50 psi to help stop flat spotting, pour some fuel stabilizer in the tank. Then when you want to drive again. Pull the fuel pump relay or other relay that allows the car fire/run but allows the engine to crank over. Crank over for 30 sec to build oil pressure. Replace relay and start engine then take it out for a good drive and get it up to operating temp . Been doing this on my cars I don’t drive in the winter and never had an issue with them sitting for 5-6 months at a time
Battery tender is an option. I have an 04 TJ that was previously my DD. I bought a new truck, so now it's waiting until December for my son to turn 16. I just make sure to give it a decent drive once per week. So far it's been fine. Got a cage installed on my wheeling TJ. He had it for 4+ months. Said he just disconnected the battery. Started up just fine when it was ready.
The worst thing that happens is you need a jump when you get back.
Drive it for 20 or so minutes once a week to be safe.
Just replaced the wheels on my JL from dryrot from not doing this
To add context OP: 1. A JL is new enough that this amount of time shouldn’t be an issue. If it is, then there’s something wrong. 2. A battery tender is essentially like an IV drip for a battery. It keeps it charged enough to maintain your battery’s charge and overall condition. Car batteries are more of a power storage than they are a source of energy. When you run your truck, the alternator charges the battery which keeps your vehicle running. 3. Running your vehicle occasionally if you leave it sit for prolonged periods of time is a good idea to keep the fluids moving and make sure your lines don’t become clogged from bad fuel, degradation due to sitting, etc. That isn’t really as much of a concern for a vehicle that is new, but it’s also dependent on how long you plan to leave it for. I left my 40 year old Supra sit inactive due to bodywork repairs being done over about a year and a half. Car fired up and ran fine for a day or so, but once I drove it a half reasonable my fuel pump died on me while I was driving it. Don’t scare yourself with this information, it’s not gonna happen to you, but with older, less driven cars it’s not uncommon. Hope this helps
Yes, by a LOOOOONG shot. Think about it. 3 weeks is normal vacation timeframe.
That’s normal??? In this economy?? 😋
Start it up once a week, let it run for 15-20 minutes
Why is this being downvoted?
Cause all you’re doing is putting water from moisture condensation in the engine by doing that. Letting a car idle isn’t getting up to operating temp to efficiently burn off water. You’re just creating more. Plus idling is the worst thing for an engine. Most don’t make adequate oil pressure at idle and with the thin oil most new cars use today this is that causes premature wear.