My dad asked me if I was charging my car battery in the cold weather. I used to years ago, but my experience of modern batteries seems to be they keep going in all weather until one day they just fail. I guess a lot of the time my car just does short runs. I have a power pack jump starter if it failed to start.
Is there anything to be gained from trickle charging a car battery occasionally? Would connecting up the jump starter for a few hours and lettting the current flow to the battery be the same?