10/18/2010 12:09 pm ET Updated May 25, 2011

Coffee Battery, 'Nespresso Capsule,' Is Powered By Used Grounds

Using coffee to create energy isn't a new idea -- we've already told you about coffee powered cars and 'inhalable coffee'. But now one innovative company has even showcased batteries that are powered by used coffee. Known as Nespresso Capsules, and devised by MischerTraxler, the batteries are made from old aluminium capsules, strips of copper, salt water and old coffee grounds.

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