Battery is almost dead
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AudiWorld Junior Member
Joined: Jun 2024
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Battery is almost dead
So my 06 a8l 4.2l quattro has never had any battery issues ever this week we got a cold front hit around 5 to 0 degrees and one day hit -7 yesterday was the first time it went negative this season i came out from work and my battery had one bar left got it to start and drove it till battery was back at 100 this am was still at 100 I haven't drove anywhere today at about 7 oclock I went out and it was back down to 1 bar is this normal or do I have a parasitic draw somewhere can some one please help me out.
AudiWorld Senior Member
Joined: Nov 2023
Posts: 746
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From: Sweden
Why buy a new battery before checking the alternator charge voltage? A simple multimeter costs $10 if you don't already have one (which you should).
AudiWorld Member
Joined: Sep 2018
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I've referenced a tender several times in these forums because I've had my battery since 2019 and I live in the white north. I've also had a battery tender in use since then. Its helped considerably with the life and condition. Before using the tender, I had replaced the battery in 2016 but it didn't last very long.
AudiWorld Wiseguy
Joined: Aug 2012
Posts: 4,071
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From: Chicago
I've referenced a tender several times in these forums because I've had my battery since 2019 and I live in the white north. I've also had a battery tender in use since then. Its helped considerably with the life and condition. Before using the tender, I had replaced the battery in 2016 but it didn't last very long.
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AudiWorld Wiseguy
Joined: Aug 2012
Posts: 4,071
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From: Chicago
Evidence here is a battery of unknown age in very cold weather is not holding a charge. Kind of 101 as to what the problem is, no?
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Thread Starter
AudiWorld Junior Member
Joined: Jun 2024
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Thread Starter
AudiWorld Junior Member
Joined: Jun 2024
Posts: 36
Likes: 0
Battery is 950cc about 6 months old and my alternator charges it right back up after about 15 to 20 minutes or so of driving it's fine once charged back up it's also first time we got negative degree weather