Battery dead every 5-6 months

[tengg2001]

Hi y’all
Not sure if anyone has similar experience.

I bought my JLUR back in February 2021. In Early august, the battery just died without apparent cause, and I had to jump started it. Checked by the dealer, said bad cell and replaced both batteries.

now another 6 months past, it suddenly doesnt start again. I haven’t drive it for the past 5 days but there isn’t any accessories on it that could draw current. I’m using the Noco to charge it, but it still 1-bar after 6 hours. Not a good sign!

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[mwilk012]

You replaced a low quality oem battery with another low quality oem battery. With a failure rate as high as we are seeing on these things, double or triple failure in one warranty period isn’t going to be too uncommon.

 

[garyji]

Which NOCO? The little one may not bring back a dead battery.

G.

 

[tengg2001]

Which NOCO? The little one may not bring back a dead battery.

G.

Genius5

 

[tengg2001]

You replaced a low quality oem battery with another low quality oem battery. With a failure rate as high as we are seeing on these things, double or triple failure in one warranty period isn’t going to be too uncommon.

I know.. But even though Mopar's battery has a defect rate of 10% (assuming this is a defect one), got two bad in a row is kinda rare statistiacally. I'm start to think if it's possible that some other part rather than battery could contribute to this?

 

[mwilk012]

I know.. But even though Mopar's battery has a defect rate of 10% (assuming this is a defect one), got two bad in a row is kinda rare statistiacally. I'm start to think if it's possible that some other part rather than battery could contribute to this?

of course it would feel like a rare occurrence for it to happen to you, but it’s a statistical guarantee that it will happen to someone. Just as likely to be you as anyone else.

 

[RoadiJeff]

If you have a multimeter you can check for a parasitic draw by following the steps in the video below. I know you sad you don't have any accessories added that would be causing the battery to go low but something is doing it.

 

[supermike]

Just put a Optima DH6. Only $300 or so, and 3 year free replacement, in any auto zone store. Why bother with another junk battery?

 

[JustDave]

of course it would feel like a rare occurrence for it to happen to you, but it’s a statistical guarantee that it will happen to someone. Just as likely to be you as anyone else.

Statistical possibility maybe, no a guarantee. You have something else wrong with your Jeep.

 

[Strommen95]

My personal hunch would be that you're doing something to drain the battery without realizing it. While the OEM batteries frequently fail, that would be extremely fast to go through 2 in 6 months. Me personally, both my main and aux were fine for nearly 3 years before I preemptively replaced. So it's surprising to see a thread like this, even though they come up frequently.

Do you have a dashcam that's frequently recording?

 

[mwilk012]

Statistical possibility maybe, no a guarantee. You have something else wrong with your Jeep.

There are millions of these vehicles on the roads. It’s guaranteed.

 

[MtCamper]

If indeed the OEM batteries have a 10% defect rate then OP has a 1 in 100 chance of having two bad batteries in a row. One more replacement gives him 1 in 1000. I'd still check for parasites.

 

[longfiredragon]

Maybe I missed it, but what engine do you have? It does sound like you may have some kind of draw on your Jeep.

 

[JustDave]

There are millions of these vehicles on the roads. It’s guaranteed.

That makes no sense whatsoever.

 

[tengg2001]

Maybe I missed it, but what engine do you have? It does sound like you may have some kind of draw on your Jeep.

It is the 2.0

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