Parasitic Battery Drain Measured on 1990 Audi 100

[mboucher70 hotmail.com]

After 14 days the battery was down to 11.5 volts, but it started just fine. 
Turned over a bit slower but started right away.  Needless to say not an 
optimal situation.  I've removed the 30A fuse for the chair memory and 
charged the battery up.  Now it will have a 50mA parasitic drain remaining.

Still can't help wondering if that's the design of the chair memory module, 
or did something in it go bad.  And if so, a diode? capacitor? just 
curious...

-----Original Message----- 
From: PSD
Sent: Tuesday, July 21, 2015 1:57 PM
To: 'mboucher70 hotmail.com' ; quattro at audifans.com
Subject: RE: Parasitic Battery Drain Measured on 1990 Audi 100

Just curious, did the car start after 14 days?  That draw would kill the
average battery pretty quick.

-----Original Message-----
From: quattro [mailto:quattro-bounces at audifans.com] On Behalf Of mboucher70
hotmail.com
Sent: Tuesday, July 21, 2015 12:16 AM
To: quattro at audifans.com
Subject: Parasitic Battery Drain Measured on 1990 Audi 100


I've always noticed that my Audi's car battery ran down faster than other
cars when the car hadn't been driven for a while.  Two weeks ago I did
1000km of highway driving then parked it and didn't drive it for 14 days.
Yesterday after 14 days, I measured the voltage and it was down to about
11.5 volts.


I decided to finally measure what the drain on the battery was, when the car
is just sitting parked.  And further, to see what was actually responsible
for that drain.  I did this by routing the battery through an ammeter.
Results:  Total drain: just over 1/4 of an amp. 261 mA to be precise.