We are going to be out of town for ten days with our 2019 I Pace in our garage. We will charge the car before we go. Should we leave it on our L2 charger in the garage or disconnect? Concern is the amount of energy the car uses while sitting unused versus the capacity of the 12V battery. We are assuming the 12V will stay charged if the car is left connected. Any downside to leaving the car connected?