navidn89

For what it's worth, I just change the OEM battery in my 2017 E300 to an Interstate battery from Costco. The installation was relatively straightforward if you have the right tools. Made a quick stop at Harbor Freight for all of the right size wrenches. Just make sure you follow the correct order of detaching/attaching positive and negative. MB says your computer will reset if you unplug the battery without an external power source but the only thing that reset was the clock which itself after a min or two connected to the internet.

Costco has a 3 year warranty which is apparently very straightforward and no questions asked.