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HI newest member joined today although had the Q5 for some 10 years. Probably spent more money than I needed to if I had discovered the site earlier. My latest issue was a (as it turned out) dead battery which locked my key fob in the ignition. RAC sorted it out within 30 mins and only charged me for a new battery.
 

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Welcome to our forum :) We can all learn from our mistakes. Perhaps you can share some of yours.
 

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Audi SQ5 2015
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Welcome to the forum (y)

If the battery has been replaced, the code should be changed, otherwise the management system thinks it is still the old battery, and charges it accordingly, which can limit the life of the new battery.
 

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Correct coding, tells the battery management system a lot of crucial information. It is ESSENTIAL to understand BEM battery coding for a healthy long lasting battery. Manufacturers have developed intelligent battery energy management systems (BEM) that monitor the car battery using sensors. This is to ensure a long service life despite the higher load, especially for cars with stop/start technology.

You must make sure that the old battery is replaced by an equivalent battery in terms of technology, performance class and size.

BEM Format: NNNNNNNNNNN XXX ZZZZZZZZZZ
N = Battery Part Number (11 Digits)
X = Battery Vendor (3 Digits)
Z = Battery Serial Number (10 Digits)

The 10 digit battery serial number (ZZZZZZZZZZ) can be broken down further --> X Y MM DD SSSS
X- variable digit, which depending on the battery manufacturer may be different.
Y- Last digit of the year of manufacture of the battery.
MM- Month of manufacture of the battery.
DD- Battery manufacture day.
SSSS- Serial number of the battery.

Audi Q5 11 digit Battery Part Code (NNNNNNNNNNN) contains the following info:
000 915 105 DE - 61AH/330A
000 915 105 CC - 68AH/380A
8K0 915 105 C - 70AH/340A
000 915 105 CD - 75AH/420A
000 915 105 DH - 80AH/380A
000 915 105 CE - 92AH/520A
000 915 105 DK - 95AH/450A
000 915 105 CF - 105AH/580A
000 915 105 DL - 110AH/520A

Updated old to new Battery Part Codes:
8K0915105D became 000915105DH
8K0915105H became 000915105DE
4F0915105E became 000915105CE
000915105AH became 000915105DK
000915105AK became 000915105DL

Some Battery Part Codes from another forum:
51Ah - 8K0915105J / 000915105BB / 000915105DC
60 Ah - 4F0915105 / 8K0915105G / 000915105DD
61Ah - 8K0915105H / 000915105AD / 000915105DE
70Ah - 4F0915105A / 8K0915105C / 000915105DF
72Ah - 8K0915105B / 000915105AF / 000915105DG
80Ah - 4F0915105B / 8K0915105D / 000915105AG / 4FD915105 / 8KD915105 / 000915105DH
95Ah - 4F0915105C / 8K0915105E / 000915105AH / 000915105DK
110Ah - 4F0915105D / 8K0915105F / 000915105AK / 8KD915105A / 000915105DL
68Ah - (AGM) 7L0915105 / 000915105CC
75Ah - (AGM) 3D0915105H / 000915105CD
92Ah - (AGM) 4F0915105E / 000915105CE
105Ah - (AGM) 4L0915105 / 000915105CF
115Ah - (high cap.) 4H0915105 / 000915105DM

You can code your battery with VCDS or OBDeleven (which is what I use).
Further info: Battery Replacement - Ross-Tech Wiki
 
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