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Panasonic and Sanyo have partnered to create a Lithium-ion battery that would be powerful enough to store enough energy to run a household for a week. They will launch this device in 2011. This lithium-ion battery will be better than the existing fuel cells which are considered as efficient power storage for home use. The battery will be paired with a system that allows users to monitor electricity usage on their household. Stay tuned for more updates. [Greenlaunches][Source]
