E-Class Coupe (C207) & Cabrio (A207) 2010-: E250CDI Coupe, E350 Coupe, E350CDI Coupe, E500 Coupe, E550 Coupe [Coupes & Cabriolets]

Battery question

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Old Nov 9, 2019 | 11:07 AM
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dubzino's Avatar
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2011 E550 Coupe P2 Distronic
Battery question

Hey guys its been a little while since I have popped up on here but just had a quick question as I kind of goofed up. My battery is getting pretty old as its the original on a 2011 e550. Now everywhere I looked said I needed a group 49 agm battery. So I went out and bought one and in result it is much to big for the battery area. Does anyone know the proper battery size for our vehicle?
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Old Nov 9, 2019 | 11:13 AM
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'19 E63S sedan
Originally Posted by dubzino
Hey guys its been a little while since I have popped up on here but just had a quick question as I kind of goofed up. My battery is getting pretty old as its the original on a 2011 e550. Now everywhere I looked said I needed a group 49 agm battery. So I went out and bought one and in result it is much to big for the battery area. Does anyone know the proper battery size for our vehicle?
Google machine says 94R.
https://www.autozone.com/batteries-s...benz/e550/2011
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Old Nov 10, 2019 | 07:52 PM
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From: Marietta, Ga
11 E350 Cab, 18 GLS450
H7 or H8 AGM would fit from what Interstate Battery mentions, and H7 from Walmart.
https://www.battfinder.com/?povid=sh...atteries+shelf
I personally use Everstart Max by Walmart and I have always had 5 plus years of life in all of my 4 cars..


Cheers
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Old Nov 10, 2019 | 08:27 PM
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'11 E550 Cpe/'04 GT3
Just replaced my ‘11 E550 coupes MB battery with an H7 from WallyMao - great price & warranty.
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Old Apr 18, 2020 | 09:53 PM
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2012 E350 Cab
I think H7 or H8 will fit. Maybe. However, the battery I had, which said something like “original equipment size”, was smaller and the exact size of the H6. So, I bought the H6 and all is good.
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Old Apr 19, 2020 | 03:43 PM
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H7/94R that's what works on our cars. Got one from Costco/Interstate for $175 and pretty happy with it. Comes with 3 years warranty fulfilled by Costco btw.
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Old Apr 20, 2020 | 12:48 PM
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is everyone buying an AGM battery or are these wallyworld batteries FLA batteries?
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Old Apr 20, 2020 | 09:56 PM
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Originally Posted by nauticalx
is everyone buying an AGM battery or are these wallyworld batteries FLA batteries?
The one I bought is AGM.
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Old Apr 22, 2020 | 10:52 AM
  #9  
SMG_CT's Avatar
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From: Wilton, CT
2013 E350 4Matic Coupe
Replaced my OEM Battery in January 2020

The OEM battery was 7 years old.

Here are the details about the replacement battery used in my in my 2013 E350 4matic; an Interstate AGM MTX94/RH7.


Last edited by SMG_CT; Apr 22, 2020 at 07:13 PM.
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Old Apr 22, 2020 | 10:57 AM
  #10  
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2013 E350 4Matic Coupe
Exclamation You may need to do a window re-synchronization

after replacing the battery. Here is the procedure
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Old Jun 29, 2020 | 12:44 PM
  #11  
SteveMcQueen's Avatar
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2014 E350 Cabriolet
The OE battery in my '14 E350 Cab just went bad so I'm searching out a new one. All the online parts "check fitment" features, including Interstate/Costco, want to sell me an H6 battery but the car currently has an H7 battery in it. Autozone.com even says an H8 battery is an "alternate fit" but there's no way an H8 is fitting in there. The tray is clearly designed for an H7 battery. I can't even imagine how an H6 would be mounted as there doesn't appear to be that much adjustment in the hold-down bracket to account for the nearly 2" difference in length between the H6 and H7 batteries.

Bottom line, I'm searching for an H7/L4/94R battery today.
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