A4 (B5 Platform) Discussion Discussion forum for the B5 Audi A4 produced from 1995-2001 B5 FAQ

Stumped with battery

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Old May 23, 2005 | 10:16 AM
  #1  
rabthol's Avatar
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Default Stumped with battery

My battery was only at like 10volts this morning. have no clue why, no lights were left on, but the cells are not filled either, so I figured this was the problem. I tried to jump it off, but when I connected the cables, it had no affect. I made sure the cables were properly attached. What is weird is that I used a meter to guage the voltage on the cables coming from the donor car. It was fine, like 14 volts... When I attached the cables, I metered the posts of my car, and it read 10V again-with the cables attached! How can this be if the donor car was attached to my car's battery?? I tried to start my car, but no change in anything. I have never experienced this ever, with any car I have tried to jump off. I am going to buy a new battery today,. but if anyone can help with this dilemma or shed some light, it would be great. Am I an idiot here-or is this normal
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Old May 23, 2005 | 10:21 AM
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Default It looks like your battery has an internal short.

Where the lead plates inside become shorted buy the gunk (deteriorated lead) collecting on the bottom.
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Old May 23, 2005 | 10:34 AM
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rabthol's Avatar
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Default Re: It looks like your battery has an internal short.

Would that cause the weird voltmeter readings?
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