Mini tank-like hydrogen robot runs 20 hours on single charge

The article introduces Hermione, a hydrogen-powered unmanned ground vehicle (UGV) developed jointly by Polish firm P.H.U. Lechmar and French company H2X-Defense, unveiled at the 2025 International Defence Industry Exhibition (MSPO) in Kielce. Hermione is designed as a modular, versatile platform capable of carrying payloads up to two tons and performing various battlefield roles, including drone transport, logistics support, reconnaissance, and combat when equipped with remote weapon stations or advanced sensors. The demonstrator model shown carried a 300-kilogram payload, measured approximately 11 feet long, and weighed around 700 kilograms. It features all-wheel drive, a top speed of 24 mph, and is built to operate in tough environments. At the core of Hermione is a hydrogen propulsion system powered by fuel cells housed in TPED-certified cylinders, driving eight 8 kW hub-mounted electric motors, supplemented by a 25 kWh battery pack. This combination enables the UGV to