Sometimes new 2022 truck might have to be out side for maybe a month not being driven when it’s really cold so I want a small trickle charger on the two battery’s Old truck had a plug in on the passenger side battery. It kept both battery’s charged and warm. Should work the same for new truck. What about the electronics before I plug it in and burn something up ?? Do the new trucks have parasitic draw like some cars. The computer etc?