In my opinion this is a problem for Rivian and they need to work to figure it out. It appears they are recognizing it as an issue because the last software update acknowledged a bug in one of the frunk sensors that was causing the car not to sleep as much. When I am going on extended trips whether leaving the car at home or at an airport, I also choose not to plug in my car for safety reasons. I once had my 50amp plug arc while charging. Thankfully I was home and breakers functioned like they should to protect the circuit/rest of the home but it has made me nervous since then. I sold my Tesla Model Y that I had for 2 1/2 years before my R1S. As others mentioned, with Sentry Mode on battery drain was extremely high, typically anywhere from 2-7% a day. When I'd leave my car at the airport for an extended period of time I would turn it off. One week I was really worried about the drain because the average temperature was in the 30s/low 40s, but was surprised to see when I came back that it had only lost 2% after 5 days. Since having the R1S, even with Gear Guard off the car is losing about 2-5% a day. I take a lot of 3 day trips and typically seeing about 10-15% battery loss. It is something that Rivian needs to address. To be fair, when the Model Y first came out they had issues with the battery heater causing phantom drain which took a little over a year to fix. Overall its just battery management and hoping that Rivian continues to make improvements over time.
