Now, the military has downsized to a charger smaller than a shoebox. Dubbed, creatively, the Universal Battery Charger, the new charger weighs only six pounds. It can charge eight batteries and two USB devices at once, which is useful for the GPS systems, radios, and smartphones soldiers keep with them. The charger itself can draw power from available electrical sources. According to Marc Geitter, an engineer on the project, this includes generators, fuel cells, solar panels, wind turbines, and vehicle cigarette lighters.