TT (Mk1) Discussion Discussion forum for the Mk1 Audi TT Coupe & Roadster produced from 2000-2006

Exploded Battery.

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Old Jul 25, 2002 | 06:05 AM
  #1  
JustJeff's Avatar
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Default Exploded Battery.

No, not from my TT. Our A4.
Of course, this has to happen at the worst time. Wife and daughter in the car, it's raining a monsoon, 8PM.
Wife pulled into a service station, and after filling the tank, tried to start the car, ka-blooey!
I get the frantic cell-phone call, I grab some tools, a flashlight, my rain-coat and a box of baking soda.
Of course, the auto parts store across the street doesn't have a replacement. "Well, we show one here on the computer, but we can't find it". Great. 45 min. later, I'm a hero for fixing the car.
I had lots of "helpers" at the station.
One guy said, "Well, why don't you just try to start it anyway?"

I have never seen this happen in a car before.
I've heard of this happening when the cables are reveresed when trying to jump-start, but not when you turn the car on.

The only thing I can figure out is, when I removed the broken battery, I saw that the vent tube was clogged. The battery was 4 years old. I expect it was low on water, and it had been producing hydrogen gas.
The vent line was clogged, so the gas built up in the empty spaces inside the battery.

I dumped almost the whole box of baking soda in the battery compartment, and doused it with a lot of water.
Anybody ever see anything similar to this??

<img src="http://home.attbi.com/~uhclem/images/battery1.jpg">

<img src="http://home.attbi.com/~uhclem/images/battery2.jpg">
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Old Jul 25, 2002 | 06:10 AM
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Yeah, I've seen it in older BMW's with clogged vent lines in the trunk.....scary though
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Old Jul 25, 2002 | 06:19 AM
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Default Yes, my TT battery at about 18 months old. Did the same thing . . .

blew out the top and two sides. No explanation from the dealer and I honestly didn't care why it did it. Just always heard Audi batteries sucked and I chalked it up to that. lol
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Old Jul 25, 2002 | 06:21 AM
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are you home or at work?
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Old Jul 25, 2002 | 06:28 AM
  #5  
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Default KNowing nobody was hurt, I can say this:

Next on FOX. When good batteries go bad! We line up the worst batteries and see how they perform, then you vote to keep the ones you like.

They are calling it American Die-Hard.
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Old Jul 25, 2002 | 06:29 AM
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Holy moly. Is that an after market battery?
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Old Jul 25, 2002 | 06:32 AM
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Probably. we bought the car used, and it does not have the typical markings from Audi, etc.
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Old Jul 25, 2002 | 06:41 AM
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Default Re: Exploded Battery. Yes, happened with fairly new

Diehard. Had been driving, shut the car off for about 10 min., it blew up as soon as I hit the starter. It even dented the inside of the hood with parts of the battery top.
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Old Jul 25, 2002 | 06:41 AM
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Work for a few more minutes, but going to Park City soon
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Old Jul 25, 2002 | 06:54 AM
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Default Jeff, I've had TWO Audi batteries explode....A6 and TT -->>

There was no excuse for it on the TT....upon cranking....the car had been serviced less than 1k miles before. I have the feeling THE FLUID LEVELS WERE NOT CHECKED as part of the routine service. TT had about 26k miles, almost 2.5 years old. Covered by warranty.

The '95 A6 battery is under the back seat. That exploded on night after dinner in the restaurant parking lot upon cranking. Similar, rain, etc. Had to leave the car there overnight and return to it early in the morning after finding replacement at Sears a few blocks away from where it stranded me. Car smelled acid for months.
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