Originally Posted by HP Autowerks
I don't think it is an issue with a defective battery from Braille, but more of a electrical draw issue. There are way too many electronic consumers on the E9X cars, especially with comfort access, that particular system might be staying awake at all times, drawing maybe 80-100 milliamps, which can run the Braille batter down in a few hours. a 40-50 milliamps is the typical draw on the late model BMW's that won't cause any problems.
Not sure what you mean here. Are you saying this battery is not appropiate for the E9X M3 with comfort access application then?