A Renault is kinda irrelevant, I have both a Rivian R1T and R1S. They both behave the same. It's really up to the manufacturer how active they want the system

A Renault is kinda irrelevant, I have both a Rivian R1T and R1S. They both behave the same. It's really up to the manufacturer how active they want the system to be when it's sitting in park. I'm sure they could improve it, but as another poster mentioned, maybe it's in a sentry mode or similar. I have an e-bike that I almost never plug in and it holds its charge just fine with almost no depletion after several months of sitting. Your mileage will vary :)