Battery AC DELCO or OEM Mercedes

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.

170 for an ac delco (solid brand) battery with no charge there to replace.

Historically, OEM Mercedes batteries are really good and last many years.

m.b. buy a Benz battery?

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.

I don’t have an AMG, but a 2024 CLA 200d and having battery drain problem is annoying to say the least and haven’t even had the car for a month when it all started happening. It’s been at the dealer for the past 3 days and no voltage drop there. They gave me the signal blocking key case and they upgraded the software and still can’t find the problem. Third visit in the month and new battery installed too.

same issue with daily driver 2021 E63. In this case though, the car doesnt give me a warning as much as the Mercedes app on my phone - it alerts to low battery -even critically low, but when I get into the car it starts and there is no message.

Worst batteries I've ever had the misfortune to buy. Both died within the space of 3 months and wouldn't put out any power whatsoever. No matter if I tried to charge them, it made no difference.