Vader27

2010 car that I purchased in 2018... battery finally started showing signs of trouble last month, so I went and swapped it last week. Date stamp was 34/09. Anyone have one last longer?

The guy at Interstate said it was the oldest battery he'd ever changed.

deadlyvt

I’ll have to check mine was around the same age.
I took it out a couple years ago and my cousin installed it in his c55 and it’s still going strong

Cammer88

My 2011 still has the original OEM battery as well.

Mort

You got me by almost 2 years. Mine is 32/11 on my 2012.

ALFAitalia

My wifes 99 SLK 230K had its original Merc battery replaced a year before we sold in in 2017!.....beat that! She had only covered 66,000 miles in that time though.

DRBC43AMG

My 13' C63 is still with the original battery. Haven't looked at the date on the terminal though but it certainly must be from 12'
On a side note, my 99' W202 C43 battery gave up the ghost last November 20' and it had the original battery. During winter hibernation it was always on a trickle charger

ALFAitalia

Well that's beaten my SLK straight away!!!.....but it was never trickle charged and lived outside its whole life....so I claim the moral victory!!! I still see that car around and it still looks/sounds good with no visible rust yet!!

deadlyvt

The one out of my car was a 33/09 and it’s still going

Cwagon

Mine is 02/13 and still going strong, kept on trickle charge when not being used for a few days/weeks.

YYCStage3

My 2012 is original and without issue. It's spent a couple cold Canadian winters in an unheated garage with no TC either.

I suspect it will give up the ghost one of these days though.