Tracking down a battery drain

Grant Lenahan glenahan at vfemail.net
Wed Sep 29 06:29:29 PDT 2010


so why guess? Measure the idle draw,and load test the battery. 20:1 its the battery. 6 yrs is 2 beyond its shelf life.

Grant
On Sep 28, 2010, at 4:14 PM, Steve Buchholz wrote:

> I'm with Huw ... the voltage you're seeing should be enough to crank ... likely high internal resistance in the battery is the problem.
> 
> I'd also allow a bit higher battery draw with everything off ... 10mA is too low IMO, I wouldn't worry until the current got up into th 100mA range ...
> 
> Steven Buchholz (mobile)
> 
> ----- Reply message -----
> From: "Huw Powell" <audi at humanspeakers.com>
> Date: Tue, Sep 28, 2010 12:06 pm
> Subject: Tracking down a battery drain
> To: <TooManyAudis at aol.com>
> Cc: <quattro at audifans.com>
> 
> 
> 
> 
> On 9/28/2010 1:26 PM, TooManyAudis at aol.com wrote:
>> I've been befuddled lately by what appears to be a battery drain on my 95
>> A6q 5-speed.
>> 
>> The alternator appears to be putting out sufficient charge -- 14.0 to 14.2
>> depending on the load, but I've had to get jump starts on several occasions
>>  lately.  Most often it's been a jumpstart in the morning before work,  but
>> last Friday I needed one before I could drive home.  I charged the  battery
>> on Friday night (sears Craftsman automatic deep cycle charger), used the
>> car several times on Saturday, drove one mile to watch the Giants self
>> destruct on Sunday and before the fourth quarter was halfway over, I needed  a
>> jump to get home.
> 
> I am much more inclined to think you need to replace that six year old 
> battery.
> 
> 
> -- 
> Huw Powell
> 
> http://www.humanspeakers.com/audi
> 
> http://www.humanthoughts.org/
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Grant Lenahan
glenahan at vfemail.net





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