I noticed today that if I am sitting in my car while it's plugged in to my HPWC, it will draw power even though it isn't supposed to start charging until later that night. I saw it drawing as much as 6 kW. I set a scheduled charge time so I could leave the car plugged in when I got home but not have to pay the expensive 4-7PM electricity price. Is there a way to force it to stay on battery until the scheduled charge time? Besides leaving it unplugged, of course, because otherwise what's the point of setting a charge time if I'm going to have to go back to the garage before bed anyway?