I drove my car home yesterday afternoon and parked it in the garage with 49% battery at about 445pm. Outside temps were 38F. The garage is unheated but is attached to the home on two sides and doesn't typically dip below freezing (garage floor will have water puddled but no ice). Last night it got down to 20F outside. When I turned the car on this morning at 645AM to heat the cabin the battery was down to 44%. So my car lost 5% battery in a little over 12 hours in an unheated garage where the temps hovered close to freezing but didn't go below freezing that I am aware of. I don't plug my car in at home because I get free charging at work. I am a bit concerned about the amount of vampire loss I am seeing with my vehicle.