99lightning

Mine are original and keep going dead

Hulk

Red battery light on dash?

jmb614

I bought a direct replacement braille battery for the main, must have a received a dud as it died within a year. Have since bought a Duralast Gold and haven't had any issues. Both the BS14 and main AGM batteries are Duralast.

HeissRod

You sure it's the batteries?

99lightning

I have to keep it plugged in to a tender and if you leave key on to do anything it goes dead

stockC43

I personally like factory batteries. I'm Going on 8 years in the same battery on my s class. It sits every winter with a maintainer on it. I've seen aftermarket batteries leak and corrode cables or throw random charging warnings. Not saying factory batteries are perfect but you don't see production cars coming with diehards or duralasts. I'm sure there's a reason. Just my opinion.

Varta makes the batteries for Mercedes if you can find a supplier. It's the silver dynamic agm. http://www.varta-automotive.com/en-g...silver-dynamic

jimmysanjuan

I'm going on 5 years on a DEKA (main battery) from AutoBarn.net. Great battery. Never a problem and the price was great. Plus, the total price, shipped to CA from NJ was $192, and only took 2 days! I'm sure prices have gone up, but that was a great customer experience.

Max.H

I can imagine you have your IC pump wired to ignition power. BUt, that sounds like you got a serious drain in your electrical system. That's not normal.

Ive heard you can leave the IC pump running on batter power in the staging lanes and not have issues. Might want to check that out.

99lightning

well i use to be able to leave the ignition on for a while with no issues perhaps the battery is just out of life.

StarvingArtist

I wanted an AGM interstate, but couldn't get one for two weeks due to living in east nowhere, so I got the original from the dealer for a very reasonable $160.

J J

Walmart

chingwodapigu

Interstate makes the OEM Main batteries for Mercedes, and pretty much all Euro cars...so any place that carries Interstate made batteries would work, provided you get the correct size. I was told by a Mercedes Tech to get it at Sears since it's the exact same battery with different stickers. The AUX battery is pretty easy to find, but I had a coupon and got mine from the dealer. Varta is the OEM manufacturer for that one.

stockC43

Johnson controls is the parent company of varta and interstate. Your correct that the standard led acid battery (white) was supplied by interstate, however the agm (black) batteries are varta silver dynamic.

Here is a list of lead acid battery manufacturers that Johnson controls owns.
http://www.johnsoncontrols.com/conte...ry-brands.html

chingwodapigu

Here's the agm battery I was told was OEM manufactured by Interstate. Fortunately our cars don't need reprogramming after a battery is installed like some BMWs and my other Audi. Has Mercedes started requiring that on newer cars?

http://www.sears.com/diehard-advance...ype=SKIP_LEVEL

Toadster

AGM Energizer battery at Sam's Club

3 years full replacement, 2 years prorated after that

Sphinx144

anyone know what size OPTIMA red top battery fits our cars?