Bruge bilen som batterilager hjemme Fisher kan, kan Tesla | Tesla Forum

Onboard charger (AC/DC converter) kan ikke sende strøm den anden vej.

delvis rigtigt.
du overser muligheden for DC ladning.
den kan sagtens sende ud, men kun ved DC ladning, fordi der er batteri forbundet direkte til ladeporten.
bilen overvåger ladningen, og vil sikkert afbryde DC relæet hvis strømmen går den forkerte vej.
jeg har ikke testet det, men det er teknisk muligt.

Lad os nu se hvad Fisker kan og hvor meget der går tabt undervejs i den øvelse.

VW snakker også om det: https://www.volkswagen-newsroom.com/en/press-releases/convenient-networked-and-sustainable-new-solutions-for-charging-electric-volkswagen-models-7695

"But the potential is even greater in combination with bidirectional charging – a ground-breaking technology about to be launched at Volkswagen: the electric cars can feed electricity they don’t need into the customer’s home network (vehicle-to-home) and in the future they will also provide electricity to stabilise the electricity grid. All ID. models with a 77 kWh battery will have this capability in future. An over-the-air update rolled out gradually will be used to make this available for vehicles already delivered as well. A special DC BiDi wallbox will be used for the power transfer and communication."