Sony has created an eco-friendly battery that produces electricity by breaking down sugar.

The bio cell, which measures 39 cubic millimeters, delivers 50mW — a world record for such a cell, according to the company.

In the bio cell sugar-digesting enzymes at the anode extract electrons and hydrogen ions from the glucose. The hydrogen ions pass through a membrane separator to the cathode where they absorb oxygen from the air to produce water as a byproduct. The electrons flow around the circuit outside the device producing the electricity needed to power it.