Mercedes-Benz 2007-2023 (000000-004039) Sealed Lead-Acid Auxiliary Battery/Not a Starter Battery

Perfect replacement in a 2015 Mercedes ML 350 4Matic. DIY for 1/5 the dealership charges! There are several videos that are wrong about where this battery is located in the car described above. It’s under the right tail light in my car. I firmly believe this battery came out of the exact same plant as the original. At 108,000 miles my car would not go into park every time reliable. This battery solved that problem!

My car had been warning me for a while about faulty auxiliary battery. I finally decided to get a new one. The delivery time was pretty fast and the price was extremely competitive (I compare everything!) It fits my GLA-250 perfectly and was super easy to install. No need to go pay for the dealer to do it!

Fit perfect on my Mercedes-Benz. Hasn’t given us any problems.

AMAZON SAID IT FITS 2015 GL450 AND THE SELLER (GonWalt LLC) SAID THE SAME, BUT BOTH OF THEM WERE INCORRECT. THE ACTUAL BETTERY IS NOT LOCATED WITH THE MAIN BETTARY AND THE SIZE IS 3 TIMES BIGGER THAN THIS PRODUCT. I RETURNED IT, BUT IT WAS NOT FREE. YOU HAVE TO PAY FOR THE SHIPPING TO BAKERSFIELD, CA. AMAZON ASKED ME TO DEAL WITH THE SELLER AND SELLER DIDN'T WANT TO ISSUE "PAID SHIPPING LABEL" AS OF TODAY, JANUARY 3, 2026

This was the exact part for my 2009 Mercedes S-550 4-magic. My car came up with a warning about an auxiliary battery malfunction. The price on Amazon was almost 50% less than I was finding elsewhere. My battery was located behind the fuse panel box on the driver’s front. The parts guide on the item said it would not fit, however, but because the battery part numbers matched, I went ahead and ordered it. It was an exact match to the original. No problems replacing it.