The unit can charge up to two EVs at the same time, and offers fast charging (known as Level 3 or DC Fast Charging) giving you 60 miles of battery range in an hour. CEO Marc-Andre Forget described it as a "small Tesla Supercharger inside your home."
The Dcbel can charge any EV, but to use your electric vehicle as a power source the car has to have bi-directional charging. That's only compatible with the Nissan Leaf and Mitsubishi Outlander plug-in hybrid vehicles for now.
The Dcbel can supplement your home's everyday power use with stored energy from an EV, or it can kick into action during a power outage and can power the average American home for up to 12 hours (depending of course on how much charge was in the EV and what your power draw is).
It's not cheap, but it is cheaper than installing a Tesla Powerwall.
See This EV charger turns electric cars into back-up power sources
Plug in your car to power your house.