Can anyone help me? Aux Battery Replacement

bemorehuman · 2025-10-04T10:57:15-0400

Hi everyone I have a 2017 Q50. I need to replace my Auxiliary Battery that is located in the back on my trunk. Can anyone give me the right replacement that I can use to replace it. Something maybe from Autozone, Walmart, or O’Reillys. I don’t want to buy it at the dealership because I know I can get a replacement at one of these places for probably a lower price.

Can anyone help me?

313Dylan · 2025-10-05T13:14:09-0400

I see you have a 2.0T... I found the FSM entry from model year 2016 on your variant. It seems the 2.0T has start/stop (didn't know that before!)... so it does mean the replacement battery is pretty specific to those systems. It doesn't seem to be exactly like a regular battery... so finding one has been tough: it's a Q85MF battery. Just as a starting point in your search... I came across this site: Q85 MF Century Battery

bemorehuman · 2025-10-05T18:21:56-0400

Is there away that you can find me a version of this battery on EBay? Or anywhere? I looked everywhere for it and it’s kind of hard to find.

Ronin47 · 2025-10-05T19:04:30-0400

fleabay is not a good choice of looking for critical items like a battery, as they have harmful liquids. Also you may unknowingly buy a faulty or dead battery not accepting a charge, so that is money wasted. I would suggest you get it from the dealership, that way you have recourse if the battery fails or is not right with it.

Can anyone help me? Aux Battery Replacement

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