You can run your fridge and freezer, you can run your (gas) furnace, and your lights. That’s most people’s core requirements, and a typical car battery can do this for 5 days. I’ve also heard of people watching tv on it.
Yep, ran my refrigerator, my router and my modem with an inverter on my Chevrolet Bolt EV after blackouts from a large windstorm in California knocked power out for a few days.
The trick with Bolt EVs is that one must have the car on, because the high voltage battery will not engage when the car is off for safety reasons. Also, the car shuts off every hour of unless the seatbelt is fastened. This is not a big deal.
Since the comparison was between a generator, I left out the generator inlet you need. But that’s like <1k$ install. The car replaces the generator but the inlet is needed to breaker box either way.
