Wow lifetime warranty but would ti cover the replacement as well?
Batteries do not last forever.
Price is higher then say a local auto parts store but life time free replacements?
Heck once you get the second one for free it has paid for itself..

Question is how long will they be in business?

That is a million dollar question.

On the other hand FCPEuroparts offers the same, free shipping, 2$ more than the eEURO.

Now, where did you find it for cheaper?

million dollar question.

On the other hand FCPEuroparts offers the same, free shipping, 2$ more than the eEURO.

Now, where did you find it for cheaper?
Like this? I didn't even check the part number yet. This is aftermarket not OEM(MB) or Bosch.
https://www.ebay.com/itm/Mercedes-W164-W251-GL-ML-R-Class-NEW-GENUINE-Auxiliary-Battery-1-2AH/112041275311?fits=Year%3A2014%7CModel%3AE350&epid= 1237141746&hash=item1a162e2faf:g:NxsAAOSwQTVWA4K1: sc:ShippingMethodExpress!28262!US!-1:rk:3:pf:1&frcectupt=true

Cheaper:
Local Auto Zone = $99 3yr
https://www.autozone.com/ignition-tu...4_994522_25698

Some may not have in stock but can get in day.
Napa was $104
Adavanced was $110

Good Luck

gotcha, I believe they would install too, if I buy it from them.
On the other hand, there is a 20$ off of 100 or more. That should bring close to $100 for the battery.

Thanks for the info.

1. Autozone or similar for 3 year warranty.
2. Those euro websites which we don't know how long they will stay in business for Lifetime warranty.

3. Which I won't take anyway is Mercedes Dealer 142.38+ taxes for 2 year warranty. Since this is not the main battery, I'm leaning towards the cheaper option.

I think it covers it forever so some people have bought the oil change kit and keep sending in the old oil for a new oil kit. You have to buy a new one and then send in the old one before you get reimbursed so you have to pay shipping to return it.

They're a little bit more than some places, but if you think the part might fail at some point, it's worth it for the lifetime warranty. But some parts like alternators already come with lifetime warranties from an auto parts store and they're cheaper and local so it's not always worth it.