No mention of current, energy, what the cathode is made of, what happens to the electrodes after they have reacted for a long time. I don't see any indication that they actually had a test load and they appear to be using an AVR Arduino directly to measure the voltage which is not really a great strategy for evaluating an electrochemical cell like this. There should be a more accurate ADC instrument with a precise measurement impedance and known integration time, and some galvanic isolation to the device under test wouldn't hurt either. This can be DIY built but instruments for this already exist as well.<p>They suggest that 5 square meters could power a single board computer but there isn't any further detail on what that actually means. I am curious about it but there isn't enough information here.