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Randall C
Randall C, ASE Certified Technician
Category: Mercedes
Satisfied Customers: 12728
Experience:  32 years Foreign / Domestic Cars All aspects of Diag and Repair
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Main Battery is weak, looking for proper replacement. I was

Customer Question

Main Battery is weak, looking for proper replacement. I was told I needed to get a AGM Group 49 battery.
JA: How old is the battery? And have you tested it with a voltmeter?
Customer: Not Sure & No. Just bought the car recently
JA: What is the model/year of your Mercedes?
Customer: 06 R500
JA: Are you fixing your R500 yourself? What have you tried so far?
Customer: No I have a Mercedes Mechanic but thought the battery was something I could do myself. And I understand how detailed it is in replacing it.
JA: Anything else you want the mechanic to know before I connect you?
Customer: At this time, I can't think of anything
Submitted: 1 month ago.
Category: Mercedes
Expert:  Randall C replied 1 month ago.

Hello, are you asking for the full instructions on how to change the battery? or something else

Customer: replied 1 month ago.
Hello, I'm asking on what type of battery.
Customer: replied 1 month ago.
I was told it needed to be a AGM Group 49 type of battery
Expert:  Randall C replied 1 month ago.

oh ok, bear with me a couple minutes

Customer: replied 1 month ago.
No thanks
Expert:  Randall C replied 1 month ago.

Ok, here are the specs and yes a group 49

Product Details

Part Number:H8-DLG


Warranty:5 years

Notes:*** 900 Cold cranking Amps (1000 cranking Amps) ***. 150 reserve minutes. Warranty consists of 3 years free replacement plus 2 years prorated. Installation could take up to 66 minutes. Battery located under hood. OE battery is valve regulated lead battery. Customer's discretion to use flooded battery. Battery is vented to outside of vehicle.



BCI Cold Cranking Amps (CCA):900

BCI Cold Cranking Amps Value:Tested to BCI Standard

BCI Designation:49

Battery Height:190 mm - 7 1/2 in

Battery Length:353 mm - 13 15/16 in

Battery Width:175 mm - 6 15/16 in

Core Charge Applicable:Yes

Cranking Amps (CA):1000

EN / DIN Designation:H8/LN5

EN Cold Cranking Amps (CCA):760

Expert:  Randall C replied 1 month ago.

the BCI designation shown as group 49

Expert:  Randall C replied 1 month ago.

you can pull this file link to see how to change, Book time is 1.1 hours