BMW M4 Battery Issues

[TBlueF82]

Hello everyone,

I’m new to the forum. I’m having battery issues with my F82 and i’m not sure what to do or what the problem is. The error code is “ Electrical Power Supply Limited”. A new battery is a couple thousand easily so looking for alternatives. Do I need a new battery? Maybe a bad cable? Any help would be appreciated. Thanks in advance!

[AlmondJayRoM3]

How long has this been happening? Did you just get this car?

First thing I would do is check tightness of the power supply connections both at the battery and under the hood. The check what error codes you currently have.

Then check the battery voltage both with the car running and off. Charge the battery and see if the battery can hold voltage overnight.

[Spitfire007]

I'm sorry...why is another battery a couple thousand dollars?

[BananaSlug]

Originally Posted by Spitfire007

I'm sorry...why is another battery a couple thousand dollars?

They use a Lithium-Ion battery.

[BzsBimmer]

Originally Posted by johnsheldon23

I just had a similar issue with my M8 F91, and that was a real pain. I tried everything I could but couldn't fix this until I came across the repair manual site [url deleted] they have the best manuals for every BMW vehicle. you should try.

Lol 1 post. What are you peddling here?

OP
Are you original owner? Did someone replace the battery at some point? Is it the original battery? Heading down the path that the battery may need registration or is coded incorrectly. Also the negative IBS cable could be at fault or the small connector isn’t connected (black/red wire)

[N1rve]

Originally Posted by Spitfire007

I'm sorry...why is another battery a couple thousand dollars?

It's a lithium-ion battery, not an AGM or lead acid. The part number is 61-21-8-047-221

[TBlueF82]

Originally Posted by BzsBimmer

Lol 1 post. What are you peddling here?

OP
Are you original owner? Did someone replace the battery at some point? Is it the original battery? Heading down the path that the battery may need registration or is coded incorrectly. Also the negative IBS cable could be at fault or the small connector isn’t connected (black/red wire)

I just purchased the car, not sure about its history. I’ll check the cables and report back.

[BzsBimmer]

It looks like everything is connected.
I see the cables etc. maybe remove the terminals, clean, reinstall.

[ilia]

Originally Posted by TBlueF82

I just purchased the car, not sure about its history. I’ll check the cables and report back.

Quick FYI tip: don't close the trunk while the battery is disconnected.

[Bravoo67]

Check voltage of the battery with some battery tester, used lion is up to 1k, I have agm just needed to change negative cable from reg F30, can program it with bimmerlink so the car doesnt overcharge I guess but didnt find it crucial as long as you swap it with same amperage etc

[hellokitty]

Anti gravity batteries should be on sale for Black Friday. I'm planning to pick one up as a spare since our lithium batteries start to go out after 6+ years.

[M3orbust]

I know Iam wrong here but I cant help think a 2 thousand dollar battery should at least last close to a decade, I've had standard car batteries last that long. Op you ever get the issue sorted out ??

[6spd4lyfe]

I thought these batteries last 10 years

[jmciver]

Originally Posted by M3orbust

I know Iam wrong here but I cant help think a 2 thousand dollar battery should at least last close to a decade, I've had standard car batteries last that long. Op you ever get the issue sorted out ??

The lithium battery technology provides a very lightweight solution (compared to lead acid or AGM batteries) - so good for a performance car. It also has very good energy density/storage capacity when compared to lead acid or AGM batteries. Unfortunately, that comes at the cost of longevity when compared to lead acid and AGM batteries.

That said, lithium battery technology (of which there are different "flavors") is continuously improving, including becoming more cost effective…..

[N1rve]

Originally Posted by M3orbust

I know Iam wrong here but I cant help think a 2 thousand dollar battery should at least last close to a decade, I've had standard car batteries last that long. Op you ever get the issue sorted out ??

You would hope "You get what you pay for" applies here... but batteries are batteries and have a finite life.

I've never had a standard lead acid or AGM exceed 4 years in my old cars and I daily drove them haha. Battery warranties aren't even long anymore. They used to be like 6 years or something. Now they're like 3 years? 4 years from Costco.