OEM Battery...

[Rhinebeck01]

Are the Jeep batteries AGM ?

@NewJLU2019
Yes, both are.

Sponsored

 

[Rhinebeck01]

@NewJLU2019

For maintaining /tending the JL's dual battery 12v system, a decent, inexpensive 1.25 amp maintainer/tender does the job just fine. Yes, a little slower doing it then with a 5 amp output Noco but still does the deed.

No reason to be spending $100+ on a pricier unit.

You do not need a 10 amp unit. Even a 5 is more then you need to do simple battery (2) tending like you wish to do in regard to your JL.

 

[NewJLU2019]

@NewJLU2019

For maintaining /tending the JL's dual battery 12v system, a decent, inexpensive 1.25 amp maintainer/tender does the job just fine. Yes, a little slower doing it then with a 5 amp output Noco but still does the deed.

No reason to be spending $100+ on a pricier unit.

You do not need a 10 amp unit. Even a 5 is more then you need to do simple battery (2) tending like you wish to do in regard to your JL.

Thanks. just ordered the Genius 5. Will use on both Jeeps since same 2 batteries. The Sahara sits longer too.

 

[NewJLU2019]

Yes it will charge both if they are connected, if you want to charge the ESS battery separately then remove the ESS negative off the main negative crank battery then attach the positive off the charger to the positive main as the ESS positive is attached there then put the other clamp on the ESS negative that you disconnected, I have done it both ways when I ran the stock setup and the end results were the same.

As far as the NOCO 5 or 10 the 10 currently on Amazon is $30 more than the 5 so to me it’s worth the small increase, they both offer the same as far as being a 12v supply, repair mode, AGM and regular lead acid batteries the biggest advantage is the 10 amp will be a faster charge and will offer slightly better performance in regard to sulfate buildup removal being it throws a high amp rating to clear any buildup off the battery plating but if you plan on charging separately then go with the 5 as the 10 will be a bit much of a charge on that ESS lawnmower battery.

Thanks, I plan on using for both Jeeps. Sahara sits longer too.

 

[Odyssey USA]

36k miles. Purchased the July build Jeep in Oct 2019. I replaced the battery in May so a year and 7 months. Pitiful.

 

[Rhinebeck01]

Thanks. just ordered the Genius 5. Will use on both Jeeps since same 2 batteries. The Sahara sits longer too.

@NewJLU2019

Do either or both have the factory tow package installed. IF one has the tow package and the other doesn't then the Main battery in the JL with the tow package will be a tad richer lets say in regard to CCA.

I mention this so when you see the Noco take a tad longer to go green with the JL with the tow package, well, this would be normal...

 

[Rhinebeck01]

36k miles. Purchased the July build Jeep in Oct 2019. I replaced the battery in May so a year and 7 months. Pitiful.

@DadJokes

Not to defend the factory OEM batteries or the JL's dual battery system, but this past year in particular........ not only OEM batteries but also aftermarket batteries are having issues... needing to be replaced sooner, etc..

Thanks to Covid 19, vehicles were sitting, sitting and sitting ... even now as Covid 19 is less of thing lets say...... this sitting... no driving / no alternator in the mix is still having a negative impact on batteries.

Guys/gals that were prudent enough to use battery maintainers/tenders routinely were not impacted like those guys/gals that were oblivious to things lets say........ or...... just did not bother to be pro active lets say. You reap what you sow in regard to batteries..

.

 

[Odyssey USA]

@DadJokes

Not to defend the factory OEM batteries or the JL's dual battery system, but this past year in particular........ not only OEM but aftermarket batteries are also having issues... needing to be replaced sooner, etc..

Thanks to Covid 19, vehicles were sitting, sitting and sitting ... even now as Covid 19 is less of thing lets say...... this sitting... no driving / no alternator in the mix has a negative impact on batteries.

Guys/gals that were prudent enough to use battery maintainers/tenders routinely were not impacted like those guys/gals that were oblivious to things lets say........ or...... just did not bother to be pro active lets say. You reap what you sow in regard to batteries..

.

We slowed down some but we would take scenic drives, grocery runs, work, etc. I can’t imagine our slowing down from our normal 20,000+ Miles/year would cost us a year or so of battery life. I’ve had recent vehicles sit much more (15 Challenger 392, 27k miles in 4.5 years) and it held up. Perhaps we got one of the poorest batteries in a batch. Shrug

 

[NewJLU2019]

We slowed down some but we would take scenic drives, grocery runs, work, etc. I can’t imagine our slowing down from our normal 20,000+ Miles/year would cost us a year or so of battery life. I’ve had recent vehicles sit much more (15 Challenger 392, 27k miles in 4.5 years) and it held up. Perhaps we got one of the poorest batteries in a batch. Shrug

One reason after reading about all these battery issues is my Rubicon has been Naked for 2 months and its rained a lot here and its been parked inside. I picked it up Feb 26th and as of today its got 424 miles on it. The 2 year old Sahara has 11,084 miles is all.

My daughters 2018 Jeep Compass just lost its AUX battery. She drives a lot and she had 40,000 miles but my dealership service manager put new one it no charge for us.

 

[Jeep1969]

2019 JLUR, drive it daily at least 20-30 miles. 26k currently and had to replace both batteries this month. I also never use the ESS

 

[NewJLU2019]

One reason going to start using the Genius battery maintainers/tender. Hopefully take better care of them.

 

[WranglerMan]

One reason going to start using the Genius battery maintainers/tender. Hopefully take better care of them.

If your talking about those chargers that Genesis sells on there site those are Odyssey smart chargers and I use the 20 amp one once a month and do a recondition cycle which steps up the voltage and amps to a certain point then holds the charge at that point for 4-6 hrs and then steps back down and goes to float but the process normally takes 10+ hrs to get to float but my batteries are twin full size and have extra plating which allows for deeper cycling without adverse affects.

Now if your talking about the Genesis system I can’t recommend it enough, I love the extra power and in the time I have owned its performed flawless but it’s a very pricy investment and you as an owner have to decide what your power needs are and if you don’t run much aux equip like fridges, coolers, compressor etc.... it would be a bit over the top but you have the peace of mind of having a built in jump pack to some degree and at some point you decide to run a winch or even a portable compressor you have the luxury of a battery dedicated to just aux use but backs up the main if needed and has power available.

 

[Vinman]

A couple of things in this thread I noticed nobody touched on, first is the 2021 Rubicon’s with the 3.6 E-torque doesn’t have a second battery. And secondly, in my opinion, I think the fact that the factory dual batteries are not matched in size and specs plays a significant role in premature battery failure.

 

[WranglerMan]

A couple of things in this thread I noticed nobody touched on, first is the 2021 Rubicon’s with the 3.6 E-torque doesn’t have a second battery. And secondly, in my opinion, I think the fact that the factory dual batteries are not matched in size and specs plays a significant role in premature battery failure.

Trust me in this … I have discussed either thru emails or phone calls with battery makers and battery charger makers and they all did not agree on several concerns I had but they did all agree that batteries that are not sized to compliment each other when connected charge and discharge at different rates so when you have say a 70 aH battery and a 30 aH battery connected together and throw a 20 amp 14+ volt charge at them as that’s what the smart charger will do since it can’t isolate the batteries it will likely over time cook the smaller battery over time and shorten it’s life

The only way to avoid this is to put in a jumper bypass that allows you to separate them during a charging cycle

 

[Vinman]

Trust me in this … I have discussed either thru emails or phone calls with battery makers and battery charger makers and they all did not agree on several concerns I had but they did all agree that batteries that are not sized to compliment each other when connected charge and discharge at different rates so when you have say a 70 aH battery and a 30 aH battery connected together and throw a 20 amp 14+ volt charge at them as that’s what the smart charger will do since it can’t isolate the batteries it will likely over time cook the smaller battery over time and shorten it’s life

The only way to avoid this is to put in a jumper bypass that allows you to separate them during a charging cycle

Thats my understanding as well

Sponsored