Re: dead battery
Originally Posted by pizzaguy
I leave both of my Roadsters in the garage for 5 to 8 days quite often.
No issues at all, but then, one battery is a month old, the other 16 months old and are big (in a Reserve Capacity, Amp-Hour and CCA way).
These cars (and really all cars today) will show up to 200 mA current draw just sitting there, there's a LOT of electronics in cars today! If your battery is old and weak, it is NOT going to tolerate being bled down for days and days.
You can always take one of the battery cables off and insert a milliammeter and see how much current is being drawn. If it's over about 150 milliamps, go looking for the cause -your first stop should be the trunk light.
By coincidence I have just checked the parasitic drain on my battery.
Unlocked it averaged 15 mA and locked it jumped back and forth between 15 mA and 20 mA. The 15 mA reading flickered between 13 and 16 mA. The 20 mA reading flickered between 21 and 19 mA.
I have had no trouble starting my car after two months of sitting idle. I would predict that the car would start no problem after four months. Last year I did three months with no problem.
Last edited by onehundred80; 01-19-2011 at 01:40 PM.