Battery for Audi A6 2006

[sapstar]

I have an audi A6 2006 with MMI 2g, sat nav, 6 cd changer and a dension system. I am planning to change the car battery. Can I please get a recommendation of how many Ah and CCA battery I should be buying? I am currently looking at the below two options.

Type 019 Varta Silver H3 Heavy Duty Car Battery 100AH | eBay

****Brand New F18 Varta Silver Heavy Duty Car Battery 85AH 12V SIZE 110**** | eBay

[Guest 2]

Try and get the same spec as what's fitted currently so you won't need to code it etc. that's what I'd do, saves any hassle.


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[gupsterg]

Is your current one an Audi genuine one Sapstar?

[sapstar]

Try and get the same spec as what's fitted currently so you won't need to code it etc. that's what I'd do, saves any hassle.


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Thanks for the reply Chris. I checked my battery and it says 760CCA, 88AH and 017 on it. Is it OK to go with a 90AH battery? I don't seem to find anything 88AH.

Also I went to KwikFit to get a quote on battery replacement. They ran some test and said I need both battery and alternator replaced and will cost me £800!!!. I will go to another place and get a second opinion. But do you know if there is any way for me to tell if there is an alternator problem? I don't have any problems with the car which make me feel I need to replace alternator.

[sapstar]

hi gupsterg, how are you. I am not sure if it is a genuine one. How can I tell if it is genuine or not?

[Guest 2]

What does it say on it?

Any long part numbers or any vw/Audi logos?

[sapstar]

What does it say on it?

Any long part numbers or any vw/Audi logos?

Hi Chris, I haven't looked around the battery, but on the top, there are only 2 stickers. 1 with bar code and the other with the specs. I will get a picture and post it shortly. I haven't seen any audi logos on the top.

[Sam]

Also I went to KwikFit to get a quote on battery replacement. They ran some test and said I need both battery and alternator replaced and will cost me £800!!!. I will go to another place and get a second opinion. But do you know if there is any way for me to tell if there is an alternator problem? I don't have any problems with the car which make me feel I need to replace alternator.

Are you replacing the battery as a preventative measure or for a specific reason?

BBC - Media Centre - BBC One's Your Money, Their Tricks investigates Kwik-Fit

Assuming you have no issues whatsoever and you're simply replacing the battery to be safe, lodge your feedback here;

Kwik Fit - Response to the BBC "Your Money, Their Tricks"

This really needs to stop.

[gupsterg]

I checked my battery and it says 760CCA, 88AH and 017 on it. Is it OK to go with a 90AH battery? I don't seem to find anything 88AH.

Replacing 88 Ah with 90Ah isn't gonna causing any coding issues, assuming coding is fine in the first place ...

hi gupsterg, how are you. I am not sure if it is a genuine one. How can I tell if it is genuine or not?

Not too bad mate , hope you are well?

Hi Chris, I haven't looked around the battery, but on the top, there are only 2 stickers. 1 with bar code and the other with the specs. I will get a picture and post it shortly. I haven't seen any audi logos on the top.

There is usually a cover clipped on top (item 6) , remove that by undoing catch on strap (item 30) Link:- http://www.jimellisaudiparts.com/sho...String=battery

If you had VCDS you could get data out of battery regulation module to check battery health and other aspects.

Is there a VCDS forum member located on the map in Chris's signature which could scan car? perhaps do some measuring block checks?

[apole]

Hi there,

There are a number of things to consider here, firstly is the battery just old and failing, or is something causing it to go flat? In my case, I had a combination of factors causing the battery to improperly charge and drain. The main culprit for me was the battery module was not coded at all so could not properly control the charge/discharge of the battery, causing DIS messages etc.

Recoding this properly fixed that. I also suspected that one of the modules (Bose AMP, tuner or GPS was not turning off properly and causing a drain on the battery. To be safe I rewired these via a fused ignition switched relay to a seperate fuse box in the boot. This cuts the power to these when the engine is off and has not cut into any existing wiring so can easily be removed. Since then no issues at all, and I have put the GPS module back to how it was and no drain there. May add other 2 and see if they are okay.

You can get your battery type from the PR codes too, that is how it left the factory. I'd go with that as it's possible in the past someone has put a different capacity in there. Mine for reference is PRCode: J1U = Battery 450 A (95 Ah)

I would get a VCDS scan to start with, you are likely to see all kinds of messages like this:

Address 61: Battery Regul. Labels: 4F0-910-181.lbl
Part No SW: 4F0 910 181 E HW: 4F0 915 181 A
Component: ENERGIEMANAGER H12 0470
Revision: 00000000 Serial number: 00000000013427
Shop #: WSC 00000 000 00000
VCID: 2341EBBF9B45


Component: von
Coding: 000000000000000000000000000000000000000000000000
Shop #: WSC 00000 000 00000


5 Faults Found:
02273 - Quiescent Current Stage 2
000 - - - Intermittent
Freeze Frame:
Fault Status: 00100000
Fault Priority: 7
Fault Frequency: 35
Mileage: 50945 km
Time Indication: 0
Date: 2011.02.18
Time: 18:25:18


02276 - Quiescent Current Stage 5
000 - - - Intermittent
Freeze Frame:
Fault Status: 00100000
Fault Priority: 7
Fault Frequency: 30
Mileage: 50945 km
Time Indication: 0
Date: 2011.02.18
Time: 18:33:46


02274 - Quiescent Current Stage 3
000 - - - Intermittent
Freeze Frame:
Fault Status: 00100000
Fault Priority: 7
Fault Frequency: 20
Mileage: 56599 km
Time Indication: 0
Date: 2011.07.12
Time: 21:36:22


02256 - Quiescent Current
001 - Upper Limit Exceeded - Intermittent
Freeze Frame:
Fault Status: 00100001
Fault Priority: 7
Fault Frequency: 162
Reset counter: 31
Mileage: 57649 km
Time Indication: 0
Date: 2011.07.14
Time: 04:37:27


02277 - Quiescent Current Stage 6
000 - - - Intermittent
Freeze Frame:
Fault Status: 00100000
Fault Priority: 7
Fault Frequency: 19
Mileage: 63012 km
Time Indication: 0
Date: 2011.11.19
Time: 20:26:26

That is my suggestion for what it's worth, it maybe something simple like no coding throwing everthing out, or something draining the battery and causing it to fail. If you need a new battery I would stick with something like Varta, Bosch etc as these are listed in VCDS for coding purposes if you need to re-code.


Good luck.

Andy