Well I don't want to take the time to wire in the 12v from the battery, so I need to unplug it over night... How cold will it stay in a truck cab at night? If I get it really cold during the day then un plug it for 6 - 8 hours..
I have never left stuff in one with it unplugged. With forscan you could have one of the interior plugs hot all the time I believe. I wire direct to battery. I have had one plugged in for over 3 days before and it didn’t effect the battery.