Hi every one, i know that Canadian Clarity's come with a battery heater. I just wanted to know if the car use the battery heater when is not plugged in & still has +60% charge. For example letting the car outside when at work at around -32C, will i not be able to go back home because is too cold or the car will use a little bit of juice to keep the battery warm even if is not plugged in. At home no problem because i have a level 2 charger and the car is almost always plugged. I live in QC and winters here are really harsh, i just want to make sure that i can drive around with my car and not getting stuck because of the extreme cold weather. Thanks.