I would expect to be able to leave my car in a parking lot for a week or two (unplugged) and still be able to drive away when I return. I feel like with overheat protection the battery would be dead by the time I got back.
Overheat protection deactivates when the battery pack reaches 20% state of charge. EVs are a bit of a different model; whenever parking for long periods, I endeavor to find a lot that lets me plug in, even if it's 120V 15A (which is enough to keep the cabin cool and the battery somewhat conditioned, although not enough to charge if both of the previously mentioned activities are occurring). Haven't had an airport or long term parking lot yet I could not find an approved outlet or EV charger for my use, but YMMV.
@leggomylibro: To reply to your deleted comment, you asked if the vehicle needed 1800W to keep itself conditioned but not maintain state of charge. It's closer to 1440W, as a 15A 120V circuit is derated to 12A (80%) for continuous duty cycle. Coolant pumps can be power hungry!
@akozak: I believe it is Tesla specific. I am unaware of the feature being present on other EVs.
I'm guessing that's Tesla specific? My Bolt doesn't have (afaik) an automatic cabin conditioning feature so I've never thought about it. Presumably Chevy built it with parts on spec to handle heat.
This is truly the argument for rooftop solar panels.
Not because they'd replenish a meaningful amount of range per day, but because they'd provide better-than-ICE unpluggability for stuff like long-term parking, cabin ventilation, battery maintenance, telematics modem sleep current, etc.
