Comment Re:You need this for an emergency (Score 1) 139
Many EVs support vehicle to load, so you can run appliances off them in the event of an outage. The issue is more to do with the planning that needs to happen for things like that to be useful. If you are going to rely on a battery, you need to make sure it is charged when you need it, which precludes also using it for general driving.
It's more of a nice to have.