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S3 Battery Issues

Discussion in 'A3/S3 Forum (8L Chassis)' started by Sam_, May 23, 2011.

  1. Sam_
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    Sam_ Down under

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    Yesterday I attempted to change the thermostat on the car (and failed - need a 1/4" socket set), during which time I removed the negative terminal on the battery. After failing, I put the terminal back on, went to start the car so I could refill the water and got the classic "click" that the battery is dead. I didn't spill any water on the alternator so that should be fine?

    I did have to back the car out of the driveway prior and the weather is a bit colder these days so could that have killed it?

    I took the battery out, attempted to charge it and it didn't take much of a charge at all. It charged for about an hour or so and then said it was fully charged. It still didn't start. I got my friend over to try and jump it with leads on his X5 but his leads were like doorbell wire and didn't do a great deal (I think they're old), it did almost turn over on one try though.

    Any ideas? I think it's just the battery itself, I have no idea of it's age so who knows. The terminals look OK but wondered if this is a common issue?
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  2. colicabcadam
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    colicabcadam Guest

    leave it to charge over night.......

    failing that, no matter what device says it's fully charged doesn't really mean anything, only way to test a car battery is to draw loads of current from it only way to do that, is to try and start a car with it

    had a similar problem with my ducati battery optimate says it;s fine, but it isn't, couldn't start a moped with it!
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  3. Sam_
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    Sam_ Down under

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    Thanks, I'll try it again tonight, can't do any harm...
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