fuel cells
Sony's new hybrid fuel cell 1.2 x 2-inch battery prototype has managed to keep the juice flowing to a cellular video broadcast for 14 consecutive hours off of 10mL of methanol. The micro fuel cell system uses methanol as fuel and is complemented with a Li-polymer secondary battery to help it deal with electronic peak loads. And according to the R&D team behind it, it may arrive to your gadgets "soon."
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