backup power

How to use the EV battery for house backup power? Seems like it should be done. Most new EV's could power my house for several days. If I get my grid tied PV set up to charge the EV, even more time than that. Has anyone here set that up, or looked into it. What EV charging connections...

Has any one tried running a 1000w or larger inverter off the Niro's 12V battery? For example, this inverter: https://www.amazon.com/AIMS-Power-1000-INVERTER-LISTED/dp/B000C73A3K/ref=sr_1_1?dchild=1&keywords=aims+power+inverter+1000&qid=1609034589&sr=8-1

I just finished wiring my house with a transfer panel so I can put a few circuits on a UPS. As a Volt owner, I also figured, "hey, wouldn't it be cool to get, say, a 1000W 12V inverter, hook it to the 12V battery in my car, and use its nice big battery pack and quiet motor-generator in place of...