Battery Bosch or OEM Mercedes

Why on earth would you pay $600 for battery + terminal. I bought recently a BOSCH AGM for $235 and installed it for free by myself after watching a tutorial on youtube.

if you have a costco membership they sell the bosch batteries for a bit more but theyre amazing. 4 year warranty too

I noticed that between 4ah and 5ah battery is little difference, but not much, 15% i would say. BUT 5.5 procore seems like 50% better than 4AH bosch battery and at least 15-20% stronger than bosch 5AH battery. When i say stronger, it is noticable in speed,strenght when i cut pellets, or drill concrete, or doing some 100mm or larger screws.

I used euro car parts 444770127 which is a mid range bosch battery. Don't remember any issues

Bosch, m-a tinut 8ani. Acum tot bosch de 70/75am luat.

The mechanic I go to gives me Bosch and they last around 2 years if not more. But then they do die within a day when they do.

Bosch - 2.5 years so far,

Varta - 1.3 years before dying

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.

My experience: Stay away from Bosch.