Check the voltage with the engine off to check the battery charge. It should be around 12.5VDC. Check the voltage with the engine running to check the alternator output. It should be around 14-14.5VDC. I have heard of other changing the battery and doing nothing and some changed the serial number by a factor of one in the computer. AudiWorld Member. Thread Starter. Join Date: Nov 2011. Location: Western NJ USA. Posts: 228. Likes: 0. Received 6 Likes on 6 Posts. A6 C7 car battery replacement. I searched the forum and read that "coding" may be needed if I replace the car battery. The engines of the Audi A6 listed above have a Start-Stop system, and in this case, this means that we must use batteries produced in AGM technology. Matching batteries have dimensions 353x175x190 mm. The parameters of these batteries are at least 95 Ah of a capacity and 850 A CCA (Cold Cranking Amps). A6 (C7 Platform) Discussion - Battery Location - Question: where is the battery located on a 2016 A6? Called the dealer, and they said underneath the driver's seat. Apologies if this has been answered before - did a search and didn't see anything. Audi A6 Car Battery Location. / Audi Car Battery Help / By advadmin. This article outlines the location of the car battery in the Audi A6. The diagram is for Petrol and Diesel engine models. Click Here for the correct battery for Audi A6 models please click the link. Battery Type is EFB. Would anyone be able to assist with the best charging mode to use? The battery will remain in the car and I will be using the Jumping/Charging pegs located in the engine bay as stated in the Audi Handbook. Cheers everyone and stay safe. A6 (C7 Platform) Discussion Discussion forum for the C7 Audi A6 produced from 2011 - 2017 Key Fob battery and replacement Reply Subscribe Thread Tools Search this Thread 03-22-2013, 02:44 PM # 1 JML - TX Audiworld Junior Member Thread Starter Join Date: Sep 2011 Location: Texas Posts: 34 Likes: 0 Received 1 Like on 1 Post Learn how to install a new battery in an Audi A7 Quattro. We'll show you how to replace/change/remove with simple tips and tricks to help get you started!Too AUDI A6 VARTA BATTERY REPLACEMENT| REGISTRATION & BATTERY MATCHING - YouTube © 2023 Google LLC VARTA Automotive Battery 100ah 830 A (EN) CCA F17 H3ORIGINAL PART NUMBER FOR AUDI BMW PwJtwl.