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I ended up going to batteries plus, getting a Duracell battery that they installed and warranty for 3 years ago for about $300.
Currently have a MB EQS that’s fantastic for about 1/3 of what it cost new.
I put in an 850 cca 800 amp battery and the old one (Duracell or something I think) I replaced was a 900cca battery. Old one was h8. I replaced with an h7 because thats what fcp euro said was the right size for my car. That was the issue. Took it out and replaced with and H8 and it was still in limp mode! Got my code reader out and cleared the codes and restarted and everything works great now
I have a 2020 GLB250 and mine was saying "12V battery" on and off for a few weeks. I checked under the hood with a multimeter and my main battery did have a low voltage while the car was off. I replaced it a few weeks back. No more notification.
m.b. buy a Benz battery?
If the battery dropped to 9V it is probably defective.
In the 166 body MB ML/GL, its under the passenger seat, with barely enough room to reach the rear terminal. It's also so far forward that you can barely grab the fuckin thing. Oh, did I mention that it is a group 49 battery.
Duracell [battery] with a 3 year free replacement warranty. Last one failed unusually early, just short of 3 years
FWIW…. I’ve had 3 Duracell batteries and all have died within 3 years of manufacture date, and they have a 2yr warranty.
I'm not putting a Duracell in my car, they can't even make a double A that doesn't leak within the year.
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In March 2026 on PartReview, battery Duracell were overall better than OEM Mercedes.
In March 2026 on PartReview, battery Duracell were overall more popular than OEM Mercedes.
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