AGM v. Flooded Cell (Error

ihbase · 07-01-2021, 07:21 PM

Featured on BIMMERPOST.com

Every new vehicle I have purchased recently has either an AGM or a lithium battery. The 2021 M2C has an old school flooded cell.

Is there a valid reason to spec a flooded cell battery other than cost-cutting?

EDIT- I was wrong. Once I looked more closely, I see that it is an AGM battery. KevinC (below) was correct.

-Michael

smknjoe · 07-01-2021, 08:05 PM

I'd say it's just about the money.

I think it was originally put in the trunk to help with the nearly 50/50 weight distribution, and it probably still does. A significantly lighter battery would throw it off some.

KevinC · 07-01-2021, 10:47 PM

Quote:

Originally Posted by ihbase

Every new vehicle I have purchased recently has either an AGM or a lithium battery. The 2021 M2C has an old school flooded cell.

I've never seen one with anything but AGM.

pz619 · 07-01-2021, 10:48 PM

Considering a replacement battery for the m4 costs like $1k. I’m glad we got the AGM battery instead.

smknjoe · 07-01-2021, 10:59 PM

Oops! My mind went straight to Antigravity batteries when I saw AGM.

ihbase · 07-02-2021, 12:51 AM

Quote:

Originally Posted by KevinC

I've never seen one with anything but AGM.

I saw the vent tube and I assumed it was a flooded cell. You may be 100% correct.

Thanks,

-Michael

ihbase · 07-02-2021, 12:53 AM

Quote:

Originally Posted by pz619

Considering a replacement battery for the m4 costs like $1k. I’m glad we got the AGM battery instead.

Really? Does the M4 use a lithium battery?

-Michael

pz619 · 07-02-2021, 02:44 AM

Quote:

Originally Posted by ihbase

Really? Does the M4 use a lithium battery?

-Michael

Yep, Lithium. Also the 1k was a bit light. Looks like its 1200 for the generic versions and around 2k if you want a BMW battery.

KevinC · 07-02-2021, 03:01 AM

Quote:

Originally Posted by ihbase

I saw the vent tube and I assumed it was a flooded cell. You may be 100% correct.

It's AGM, says so right on the battery. BMW has always vented AGM batteries, nothing new there.

ihbase · 07-02-2021, 01:31 PM

Quote:

Originally Posted by pz619

Yep, Lithium. Also the 1k was a bit light. Looks like its 1200 for the generic versions and around 2k if you want a BMW battery.

Well, at that price, one would hope for a long lifespan.

Perhaps the price will come down if that part becomes a more common spec across makes and models.

-Michael

ihbase · 07-02-2021, 03:35 PM

Quote:

Originally Posted by KevinC

It's AGM, says so right on the battery. BMW has always vented AGM batteries, nothing new there.

You are correct. My mistake.

-Michael

TargaM2 · 07-03-2021, 06:09 PM

I'm using Lithium from these guys…https://www.lithiumax.com.au/
$800, 4kg, no trickle charge, starts first kick every time even after sitting for several weeks.
They have a fitting kit too.
Had one in both my track cars too.

ihbase · 07-06-2021, 12:44 AM

Quote:

Originally Posted by TargaM2

I'm using Lithium from these guys…https://www.lithiumax.com.au/
$800, 4kg, no trickle charge, starts first kick every time even after sitting for several weeks.
They have a fitting kit too.
Had one in both my track cars too.

That is impressive.

-Michael

07-01-2021, 07:21 PM	#1
ihbase First Lieutenant 363 Rep 317 Posts Drives: e90, e91, f31, f87 Join Date: Sep 2012 Location: Oregon iTrader: (0)	AGM v. Flooded Cell (Error - AGM in M2C) Featured on BIMMERPOST.com Every new vehicle I have purchased recently has either an AGM or a lithium battery. The 2021 M2C has an old school flooded cell. Is there a valid reason to spec a flooded cell battery other than cost-cutting? EDIT- I was wrong. Once I looked more closely, I see that it is an AGM battery. KevinC (below) was correct. -Michael Last edited by ihbase; 07-02-2021 at 03:34 PM.. Reason: Incorrect information
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07-01-2021, 08:05 PM	#2
smknjoe First Lieutenant 234 Rep 330 Posts Drives: 2020 M2C, 2018 GTI, 2007 Rabbi Join Date: May 2019 Location: Houston iTrader: (0)	I'd say it's just about the money. I think it was originally put in the trunk to help with the nearly 50/50 weight distribution, and it probably still does. A significantly lighter battery would throw it off some.
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07-01-2021, 10:48 PM	#4
pz619 Brigadier General 3277 Rep 3,255 Posts Drives: F87 M2C 6MT, Tesla 3 Join Date: Oct 2013 Location: San Diego iTrader: (1)	Considering a replacement battery for the m4 costs like $1k. I’m glad we got the AGM battery instead.
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07-01-2021, 10:59 PM	#5
smknjoe First Lieutenant 234 Rep 330 Posts Drives: 2020 M2C, 2018 GTI, 2007 Rabbi Join Date: May 2019 Location: Houston iTrader: (0)	Oops! My mind went straight to Antigravity batteries when I saw AGM.
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07-03-2021, 06:09 PM	#12
TargaM2 M///modifyer 2489 Rep 1,295 Posts Drives: M2 Join Date: Feb 2008 Location: OZ iTrader: (0) Garage List 2015 Renault RS275R [9.50] 2019 Renault RS280 [10.00] 2017 BMW M2 [10.00] 2018 Audi Q2 [5.50]	I'm using Lithium from these guys…https://www.lithiumax.com.au/ $800, 4kg, no trickle charge, starts first kick every time even after sitting for several weeks. They have a fitting kit too. Had one in both my track cars too. __________________ www.tarmacperformance.com Best Modified BMW - BMW Nationals 2022
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