Battery Issue
01-13-2017, 07:36 PM
#1
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Battery Issue
I have 2007 Audi A8. The battery keeps dying. I went to get tested it is reading in high 13's-14's. When I shut the car off, within about 30 minutes when I go to start it, it wont turn over and most of the lights are all dead?
01-13-2017, 07:56 PM
#2
AudiWorld Super User
I'm guessing your battery will fail the load test as a load that discharges a large battery so fast would cause a helluva spark when connecting the battery to the cabling.....
Last edited by Mister Bally; 01-14-2017 at 05:00 AM.
01-13-2017, 08:34 PM
#3
AudiWorld Super User
How old is it? If 10 years (original), way past its prime and not even worth diagnosing. Even if done once already at 5 years or so, same answer pretty much. Good (bad) way to get stuck on the wrong side of town in dead of cold rainy or snowy night. Not for me. If newer than 3-4 years, sure look at it a bit, but if older perhaps 80% chance it will bite you soon again and in a bad situation. BTDT, about 10 times over now in not great scenarios. Jumper cables in some godforsaken parking lot at 9 at night, or an hour for some AAA dude in a truck after two calls. My rule: one unexplained let down okay and then probation. Second one anywhere near in time, summary same/next day replace by 3-4 years old.
Last edited by MP4.2+6.0; 01-13-2017 at 08:39 PM.
01-13-2017, 10:40 PM
#4
AudiWorld Super User
Something doesn't sound right. I've never seen a battery not under charge at 14V. Make sure you are getting a load test on the battery.
01-14-2017, 10:52 PM
#6
That is true. Just went through this with my son's TT. I had two batteries, one I kept on a restoration/maintenance charger. Battery was 5 years old. The "9 year Annihilator" battery in the TT was 6 years old.
Anyway both immediately failed load testing...and I thought great because they were horrible.
I also did a current consumption test on the TT itself using a Fluke meter in series. It was only 0.040A just sitting there doors closed lights off, and 0.080A with the alarm activated. That's pretty low, just a small trickle of current.
Anyway both immediately failed load testing...and I thought great because they were horrible.
I also did a current consumption test on the TT itself using a Fluke meter in series. It was only 0.040A just sitting there doors closed lights off, and 0.080A with the alarm activated. That's pretty low, just a small trickle of current.
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