Last May, we heard about how Horizon Energy Systems was developing ahydrogen-powered quadcopter that could (hopefully) stay airborne for hours at a time. Soon, however, that drone may not be the only one doing so. That’s because Intelligent Energy has unveiled a fuel cell/battery range extender that could become standard equipment on third-party drones. [x_button shape=”square” size=”large” float=”none” href=”http://www.gizmag.com/intelligent-energy-drone-hydrogen-range-extender/41288/” info=”none” …
