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Tesla unveils a battery to power your home, completely off grid

CEO of Tesla Motors, Elon Musk, landed an official message unveiling the Powerwall, a battery designed to power your home.  The message came at a convention center powered completely by renewable battery power.
The battery unit itself contains the same batteries present in the Tesla electric cars.  The 7kWh unit will ship for $3,000, while the 10kWh unit will go for $3,500 (get the big one). They will store electricity from the grid or from solar and wind generators on site and if the grid goes down, they will continue to power your home indefinitely  This feature makes them ideal for developing nations that are leap-frogging power grids completely.

Musk refers to it as changing the “entire energy infrastructure of the world.”

The batteries will begin shipping over the summer of 2015 and mount on the wall, looking like this
Here is a clip from the initial release

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