Battery died. But now engine won’t rev

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chovyfu

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I have. 2022 ram 2500 gasser.

Battery has been dying in the mornings.

Usually I just hookup the charger and everything is fine but this morning I have a lot of dashboard lights on. Including one with a clock car and exclamation point.

The engine won’t rev past 2000 rpm’s.

It’s been snowing up here.
 
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chovyfu

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So I just turned off the engine and started it again. Everything's fine. Just finished replacing that ****** mopar battery (2nd one since I bought it) with an 800CC battery from NAPA.
 
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chovyfu

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Well that new battery was dead the next morning. Today I learned batteries don’t like cold
 

Atcer2018

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Or you could have some sort of drain on the electrical system. Possible the new battery wasn’t bad. Have you checked your alternator for output? Checked for parasitic drain?
 

KKBB

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You have to have some sort of draw. I can't imagine 3 batteries were all bad.
 

Dean2

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I live where it gets to -55, you are correct batteries don't like coldd. That said, at the temperatures you would see, no way the battery is going flat over night unless you have a parasitic drain, and it would be a really good one. Easy way to know for sure, charge battery full up, disconnect a cable, measure battery voltage in the morning. My bet is it will still be 12.8 or better. If you search parasitic drain on here you will find recent threads on how to trace that down.
 

gofishn

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Batteries do nto lie the cold.
However, I leave trolling motor batteris, out in the lements, and I lose about 20% charge, every 30 days or so.

Overnight , liek you describe, is a parasitic draw, drawign juice from teh battery, to the poitn it ain;t got nothign left.

Take batteryin to get check and make sure plates are still good.
If so, charge it up and buy one of those battery quick disconnects, until you figure out what you issue happens to be.


Now, once you get teh battery and disconnect intalle,d when you get out of the truck fo rmore than 4 h ours, disconnect the battery.

re0connect just befgore you get back in teh truck to use it.

when you have time, start diagnosing you issue. Pull a fusde, leave battery in overight and see if y ou can start teh truck. if not, replace that fuse, charge battery to full, then puill another fuse.
Eventually, y ou will dfidn the circuit, then it sjust a matter of chasing wires.
 

KoboldTaco

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You have to have some sort of draw. I can't imagine 3 batteries were all bad.
This. A 2022 and draw looks like a visit to the dealership for some warrantee work and a credit for those batteries.
 

Dean2

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This. A 2022 and draw looks like a visit to the dealership for some warrantee work and a credit for those batteries.
I missed the fact it was a brand new truck. Dealer issue for sure. That is why you have warranty.
 

RamCares

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Sorry to hear you are experiencing this, we certainly understand why this would be concerning. If you end up addressing this with your local dealer, please let us know via PM. We'd be more than happy to provide you with an additional layer of assistance for that process.

Callie
Ram Cares
 

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