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#1
5th December 2011, 12:41 PM
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Battery Change Time. . .
Recently been finding that as I'm only using the 8 for the odd evening or weekend the cold weather is making the need to either run it more regularly to charge up the battery, or change the pretty old battery for a new one.
Anyways I've decided to bite the bullet and get a new battery before the weather turns really bad (or scottish as we say down here in the south lol) Ive done some research and plumped for THIS one which has an awesome 110Ah capacity and a cold cranking amps of 920 which is good and high. After a bit of playing one battery shop off against the other I've managed to get it for £99 including Vat which I don't think is too bad for a very high performance battery. I wondered how everyone else is finding the cold weather affecting their battery charge, and also who else has changed battery and to what Batteries at what sort of prices?
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Confidence is the feeling you have before you know better . . . .  Audi A8 D2 3.7 Quattro Sport 1999 FL - Melange 2nd Place Winner - A8-Freunde Annual German Meet 2012 at Edersee 20" x 9" Bentley GTC Wheels with 385mm W12 Front Discs & Bentley Caliper Covers, Front Lowered on Coilovers, Xenons, Combined DRLs and LED Foglights to modified OEM front fog lamp position, Alcantara/Leather, Full Black Alcantara headlining + pillars and blind shelf, Bespoke Flat Bottomed Sports Steering Wheel, Dark Myrtle Wood, Autodim Mirrors, Bose, Blinds, Digital TV, Ski Hatch, Modified rear exhaust section for extra V8 Burble  Audi S8 D2 Final Edition 2002, Avus Silver with Red Leather Interior Tiptronic with Sport mode button, Sony rear entertainment package, Bose sound system, Audi Navigation Plus, 20 inch Final Edition alloys, Full Cat Back Stainless Milltek exhaust, giving a great V8 burble Audi A8L D2 4.2 Petrol with LPG - Ebony Black Audi A8L D4 FL 4.0T Petrol twin turbo - Havana Black Audi A2 1.6 FSi Sport - Dolphin Grey with Votex body kit and Red Leather Interior and some other A8's A8L's and Mercs 
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#2
5th December 2011, 01:38 PM
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Quote:
Just checked and it's a Bosch 88Ah "Silver" bought in October 2003! I think I paid about £30 at Costco for it.... 
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#3
5th December 2011, 03:04 PM
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I got new one last year, bought cheapest at local shop that came with 3 year warranty for around £70. They had some cheaper ones with 2 year warranty. Don't remember make or details.
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Currently 8less 2011 Q7 S Line 3.0TDI, 2016 Tesla Model S 90D 8 history: 2006 A8 Sport 4.2TDI quattro SOLD, 1997 S8, reached end of life with gearbox failure
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#4
5th December 2011, 04:15 PM
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Quote:
Quote:
__________________
Confidence is the feeling you have before you know better . . . . Audi A8 D2 3.7 Quattro Sport 1999 FL - Melange 2nd Place Winner - A8-Freunde Annual German Meet 2012 at Edersee 20" x 9" Bentley GTC Wheels with 385mm W12 Front Discs & Bentley Caliper Covers, Front Lowered on Coilovers, Xenons, Combined DRLs and LED Foglights to modified OEM front fog lamp position, Alcantara/Leather, Full Black Alcantara headlining + pillars and blind shelf, Bespoke Flat Bottomed Sports Steering Wheel, Dark Myrtle Wood, Autodim Mirrors, Bose, Blinds, Digital TV, Ski Hatch, Modified rear exhaust section for extra V8 Burble Audi S8 D2 Final Edition 2002, Avus Silver with Red Leather Interior Tiptronic with Sport mode button, Sony rear entertainment package, Bose sound system, Audi Navigation Plus, 20 inch Final Edition alloys, Full Cat Back Stainless Milltek exhaust, giving a great V8 burble Audi A8L D2 4.2 Petrol with LPG - Ebony Black Audi A8L D4 FL 4.0T Petrol twin turbo - Havana Black Audi A2 1.6 FSi Sport - Dolphin Grey with Votex body kit and Red Leather Interior and some other A8's A8L's and Mercs
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#5
6th December 2011, 08:05 PM
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Mine has a genuine VAG (Moll) battery, never had any issues with starting, even when left for three weeks without starting. Mine's garaged though.
Just out of interest, are there any issues with throttle body reset after battery power has been interrupted?
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 2006 Audi A8 D3 Quattro Sport 4.2 TDI - Silver, Family Oil Burner. 2000 Audi A4 Quattro Sport 2.5 TDI - Santorin Blue, S8-Powered DTM Race Car Build In Progress. 2000 Audi A4 Quattro Sport 2.8 30V - Pelican Blue, RS4 Widebody, D3 4.2 01E, High-Spec B5 Build In Progress.
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#6
6th December 2011, 08:09 PM
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You are advised to change the battery within a short time of disconnecting - I did this and all I had to do was re-enter the RNS-C radio code, everything else has worked perfectly. Car is now turning over quicker and starting fine
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Confidence is the feeling you have before you know better . . . . Audi A8 D2 3.7 Quattro Sport 1999 FL - Melange 2nd Place Winner - A8-Freunde Annual German Meet 2012 at Edersee 20" x 9" Bentley GTC Wheels with 385mm W12 Front Discs & Bentley Caliper Covers, Front Lowered on Coilovers, Xenons, Combined DRLs and LED Foglights to modified OEM front fog lamp position, Alcantara/Leather, Full Black Alcantara headlining + pillars and blind shelf, Bespoke Flat Bottomed Sports Steering Wheel, Dark Myrtle Wood, Autodim Mirrors, Bose, Blinds, Digital TV, Ski Hatch, Modified rear exhaust section for extra V8 Burble Audi S8 D2 Final Edition 2002, Avus Silver with Red Leather Interior Tiptronic with Sport mode button, Sony rear entertainment package, Bose sound system, Audi Navigation Plus, 20 inch Final Edition alloys, Full Cat Back Stainless Milltek exhaust, giving a great V8 burble Audi A8L D2 4.2 Petrol with LPG - Ebony Black Audi A8L D4 FL 4.0T Petrol twin turbo - Havana Black Audi A2 1.6 FSi Sport - Dolphin Grey with Votex body kit and Red Leather Interior and some other A8's A8L's and Mercs
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#7
8th August 2012, 01:09 PM
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Resurrecting this post
 Just changed my battery for a Bosch bigun' and the car starts great and even my sat nav now works as it should (it was around 300 metres out and thanks to Limoncello for trying to help out  ).I bought it from Halfrauds and included fitting and he whipped the old one out and the new one in within a very short time frame. Now the issue - it feels like it is in limp mode  When idling, it rocks the whole car and when you drive and put your foot down it really struggles to surge forward, even when dropping down a gear or two.... Any suggestions will be greatly received as off on holiday on Friday and would prefer it to work correctly Cheers in advance
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Andy. Current cars: BMW i4 M-Sport Peugeot 207 (the sons) Triumph Daytona 675 (2017 reg) =========================== Gone but not forgotten Ford Focus ST-2 Mk3 (the wifes) (stolen Oct 2023) 1972 T2 Bay Window Camper (Slow) Audi TT Mk1 225 - now with coil-overs and a 7inch touchscreen infotainment centre 2003 A8 Sport 4.2 (with ACC & LPG) (Feed up with all the issues so passed it on to a forum member) 2000 A8 FL QS 4.2 (with RNS-E - Nice ) (Engine poorly so sold on to be brought back by someone who has the time)
Last edited by gninnam; 8th August 2012 at 01:12 PM.
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#8
8th August 2012, 03:06 PM
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was it ok before the battery change?
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2002 D2 S8 – Ming Blue, Valcona leather, Vavona wood insert, solar sunroof (to be fitted), Heated rear seats, extended leather pack, 18” Avus, ski hatch, Bose, auto dim rear view mirror, rear blind.
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#9
8th August 2012, 04:08 PM
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I suggest looking checking for fault codes in ECU and possibly do basic setting. It should self adapt after power being disconnected but it might take a while. I always do basic setting myself after disconnecting battery. Or it could be something not related to battery change. VCDS scan should give should show if something is wrong.
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Currently 8less 2011 Q7 S Line 3.0TDI, 2016 Tesla Model S 90D 8 history: 2006 A8 Sport 4.2TDI quattro SOLD, 1997 S8, reached end of life with gearbox failure
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#10
8th August 2012, 04:26 PM
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Problems idling and moving forward
This sounds like a misfire to me, how longs it been going on?
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01 Audi a8 fl sport - Grey, Bose, Glass Sunroof, S8 grill/mirror covers/wheels, Aftermarket Exhaust, very quick and lots of fun!!!!!....well I gave it one final push on the pedal to hear that v8 growl and then it was off to a new home..... 99 Audi a8 fl - Silver, Black alcantara seat/ S8 grill/side mirror, MFSW, Solar Sunroof, 17" Monoblocks (for that extra cushion of air), Rnsc, Bose.....great motorway cruiser....now gone to a new home 02 Final Edition S8 - Avus Silver, Extended Leather Pack III, Front & Rear Heated Seats, Servo, Blinds, Rear Seat Entairtainment with Playstation, Bose, Bi Xenons.....now gone to a new home 97 PF A8 4.2 quattro sport - Cashmere Grey, Servo, RNS E, Blinds, Bose, 20 Final Edition Alloys, LPG....sold sadly and will be missed 03 S4 V8 Saloon - Misano red, Manual, Milltek, Bose, Xenons, RNS E - Sold as of Feb 2012
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