Dead Battery Poll

[c3k]

I went back one page in this thread and found a battery pic that was marked 15/10/18 in a truck built 10/18 which means they use military date coding on these batteries. My battery is marked 1/10/21, truck built 10/21 and getting replaced this October with a 7yr H8. The hassle of being stuck isn’t worth the little money it costs for an early replacement.

What battery is a 7yr H8?

 

[jl13]

Joined this club at the end of March, though not very disappointed I wasn’t expecting the battery to last given all these posts. I got just over 54,000 miles out of the oem battery over 2 & 1/2 years so can’t really complain I guess

It threw three associates codes about low voltage on the computers, I cleared them after installing a new battery and no issues since fingers crossed

you did pretty good, mine only lasted 1 1/2 years

 

[jl13]

USB outlets stay on an hour after shutting down.

I am sure I have seen them stay on pass that and seems like they cycled with the rear ones

 

[Mr.Grid]

What battery is a 7yr H8?

Blain's Farm & Fleet 7-Year Platinum Automotive Battery, 49 - 49P | Blain's Farm & Fleet

I put this same Platinum battery H7 in my 2011 Ram and is still being used by the second owner over 7 yrs old.

 

[Mikgyver]

I am on my 4th battery now on my 2021 etorque. My first one died at 19000 miles, second at 24000, and now at 34000. The dealer tells me its a bad battery and there is nothing wrong with the charging system or the 48v battery. Batteries dont just die every 6 ish months. Im wondering if I have a lemon. Anyone else have issues like this?

 

[killerformula]

Are these all mopar/dealer batteries or did you put in an aftermarket unit at some point? @Mikgyver

 

[RamRam6.4]

Yup.. I've joined the club with only 302 miles on my new 2020 2500 Laramie. Dead battery (3 volts), jumped, ran with charging voltage showing at 14.5 - 15.0 volts while running for 45 minutes. Returned home and went to back into my driveway, switched it to reverse, and no cameras... the option didn't even show up on my 12" UConnect.

Measured battery voltage once off and showed 11.8 volts.

Left everything overnight. Today, back to 3 volts. Into the shop tomorrow.

I have a similar story, with a 2022 Ram 6.4L. First time this happened, had only ~4k miles on the odometer. Seond time was around 6k miles. And currently truck has been at the dealer for a week with 11K miles and the failure will not repeat. They cannot figure it out and neither can I.

Please any fixes you are aware of. Thank you!

 

[guitarjesus]

Mine Tradesman 2wd did this after sitting a few days. Lead acid battery. Crazy thing is that is that I'd hear things clicking and moving behind the dash, and the "Serv 4wd" light flashes, and I have no 4wd...

 

[2021workram]

I've got a 2021 Ram 1500 with about 46k on it. Total battery drain has happened twice now. It wouldn't start either time with a jump pack. The latest time (this morning) I was able to start it with the jump pack and a battery charger with a boost feature together. The last time I had to leave it on the charger for a few hours. I drove it to work and it was able to restart fine after 20 minutes of driving. The check engine light didn't turn off by itself yet this time.

One thing I noticed this time was when I shut the truck off yesterday it went into accessory mode. I have no idea how that happened except I think.......I was putting into park while I opening the door and then hit the ignition power off switch kind of all at once. I remember seeing that the dash said "accessory mode" or something like that and it making a chime sound that wasn't normal. I assumed it would turn accessory mode off itself off after a few minutes but obviously it didn't.

 

[mynameisante]

Very informative thread. But one thing I couldn't conclude, since most posts come out to be simply swapping in a new battery, is which battery(ies) are the best purchase? Even if it is "overkill" to have such a powerful battery, which one will do the job and last longest? Supposedly lol

 

[Jako]

Very informative thread. But one thing I couldn't conclude, since most posts come out to be simply swapping in a new battery, is which battery(ies) are the best purchase? Even if it is "overkill" to have such a powerful battery, which one will do the job and last longest? Supposedly lol

Long version

https://5thgenrams.com/community/threads/battery.46348/

Short version
AGM H8 - remove clip on battery tray (very easy to do)

 

[mynameisante]

Long version

https://5thgenrams.com/community/threads/battery.46348/

Short version
AGM H8 - remove clip on battery tray (very easy to do)

After reading that entire thread, all I got out of it is that an AGM H8 is the way to go.

Buuuttt... when I search for AGM H8, I get dozens of different battery brands that pop up. That is so damn confusing. Just looking for a simple "Interstate" or "EverStart" or whatever is out there that are the top dogs. I read somewhere that those redtop Optimas are the best?

 

[OCD Solutions]

Well if you have the same luck I did when mine went, the H8 was the only battery available that day. Easy decision.

 

[6of36]

After reading that entire thread, all I got out of it is that an AGM H8 is the way to go.

Buuuttt... when I search for AGM H8, I get dozens of different battery brands that pop up. That is so damn confusing. Just looking for a simple "Interstate" or "EverStart" or whatever is out there that are the top dogs. I read somewhere that those redtop Optimas are the best?

Never had one but I read the Optimas have gone down in quality. Just what I read.

 

[StuartV]

When I did the swap in my '19, I got the battery at Costco. I think they only had the Interstate H7, so that's what I got.

It was still working fine in my '19 when I traded it in, but that was only 5K miles later.

IIRC, the H7 is the actual spec battery. The H8 is the "overkill" battery.

 

[theblet]

When I did the swap in my '19, I got the battery at Costco. I think they only had the Interstate H7, so that's what I got.

It was still working fine in my '19 when I traded it in, but that was only 5K miles later.

IIRC, the H7 is the actual spec battery. The H8 is the "overkill" battery.

That's the battery I have. Interstate lead acid H7. Been about a year with no issues.

 

[StuartV]

That's the battery I have. Interstate lead acid H7. Been about a year with no issues.

Sorry. What I meant was that I got an Interstate AGM H7.

 

[FLiPMaRC]

What's more important, AGM or CCA??

I was at Walmart yesterday. They had an EverStart Maxx Platinum H7 AGM (800 CCA) and a EverStart Maxx 94 (900 CCA).

 

[Jako]

What's more important, AGM or CCA??

I was at Walmart yesterday. They had an EverStart Maxx Platinum H7 AGM (800 CCA) and a EverStart Maxx 94 (900 CCA).

Original OEM Mopar H7 is 750 CCA. I have gone through 4 winters with no issues starting in cold weather. The CCA may be more important in extreme cold weather.

No fast answer to explain AGM:

AGM vs Lead Acid Batteries: 12 Differences + 9 FAQs

Discover how AGM vs lead acid batteries differ, including some battery FAQs.

www.repairsmith.com

AGM from my experience costs more and has a longer warranty. I would take into consideration the discharge rate if you do not use the vehicle frequently and do not use a "battery maintainer". All new vehicles have some draw.

 

[FLiPMaRC]

Original OEM Mopar H7 is 750 CCA. I have gone through 4 winters with no issues starting in cold weather. The CCA may be more important in extreme cold weather.

No fast answer to explain AGM:

AGM vs Lead Acid Batteries: 12 Differences + 9 FAQs

Discover how AGM vs lead acid batteries differ, including some battery FAQs.

www.repairsmith.com

AGM from my experience costs more and has a longer warranty. I would take into consideration the discharge rate if you do not use the vehicle frequently and do not use a "battery maintainer". All new vehicles have some draw.

Yeah ... AGM is $180 with a 4yr warranty. The 94 is $160 with a 3yr warranty.

I only use my truck on the weekends.