Gelion plc, together with its subsidiary, engages in the research and development, manufacture, and sale of battery systems in the United Kingdom and internationally. The company offers storage batteries, which include lithium-sulfur and zinc hybrid cell batteries. Its products are used in various applications, including drones and unmanned aerial vehicles, commercial e-aviation, passenger and heavy vehicles, and heavy electric vehicles; and stand-alone power systems, commercial and industry systems, uninterruptible power supplies, utility-scale stationary ESS, and reserve power applications. The company was incorporated in 2015 and is based in London, the United Kingdom.