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UPDATE: i just got my wifes car back from the dealership and it turns out it was the battery for hers. The voltage thats normal for her car is 14.8 volts not 13.4. He said there are 40+ computers and when the voltage is low it causes havoc in the car.
Currently have a MB EQS that’s fantastic for about 1/3 of what it cost new.
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.
I had the same issue on my w213 - same warning every now and then until one day it just didn’t start. Replaced the battery and solved the issue.
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.
Never left me stranded besides a dead battery.
Chevy Bolt. Then it was recalled for the battery fire issue.
Chevy Bolt, almost caught fire they bought it off me
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In March 2026 on PartReview, battery OEM Chevrolet were overall better than OEM Mercedes.
Battery OEM Chevrolet and OEM Mercedes were equally popular according to data in March 2026.
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In March 2026, according to PartReview, battery OEM Chevrolet led more car-specific ratings than OEM Mercedes:
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