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All this time scientists have been experimenting with lithium-ion, lithium polymer, and nickel-metal hydride, when they should have been focusing on soda. That’s what Chinese developer Daizi Zheng did, and he managed to produce a mobile phone battery that can be powered by Coca Cola.

Zheng’s effort was part of an eco project. Zheng sought to develop a bio-friendly battery, to offset the ecological harm of regular mobile phone batteries. His invention generates electricity from the sugar in soft drinks through the use of enzymes. While any sugar-based soda will do, the battery works best with Coca Cola.

Zheng’s battery is no slouch. Besides being fully biodegradable it will last four times longer than a traditional battery. Possible pricing wasn’t mentioned, but from the photos of the device styling is a bit of an issue.