Did an inadvertent experiment this week. I was in the hospital all week, my gallbladder was badly infected and had to be removed. I drove myself to the emergency room on Monday and left the car in the parking lot. It wasn't until Thursday that I felt well enough to think about checking the app to see what may battery level was. Between Monday and Thursday the car had lost 20%. I turned off Sentry mode from the app at at point and I only lost another 1% between Thursday and Friday when they let me go home.