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Tesla CEO Elon Musk Unveils Home Battery; Is $3,000 Cheap Enough?

03:33
A photo released by Tesla shows its new Powerwall lithium-ion battery pack mounted on the wall (left) of a garage behind one of the company's electric cars. (Tesla Energy)
A photo released by Tesla shows its new Powerwall lithium-ion battery pack mounted on the wall (left) of a garage behind one of the company's electric cars. (Tesla Energy)

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