who makes Mercedes batteries?????

[davidlee]

I know optima batts are very good but I would like to keep a group 49 in it.
I would like to get a Bosch battery but there are no Pep Boys anywhere around in oregon
I know Interstate makes a good battery, and so does the Northwest tire shop Les Schwab
they are both made by Johnson Controls, and run about $180, which seems a little spendy
compared to going directly to the Mercedes dealer and getting it or $ 136
is the Mercedes battery inferior to the interstate or is there just a big price gouge cuz it says interstate. I have a Napa battery in it now, it seems to have lasted for years but Napa runs Exide which I'm not too happy with. I would kinda like to have a genuine Mercedes battery in my car but if there's a better one out there for around the same price give or take 30 40 dollars I would rather have that.
thanks for any input