In the “Command Vehicle” equipment kit, SFC Energy’s EMILY fuel cell is responsible for supplying autonomous power to the electric and electronic on-board devices. These devices are continuously used for eight or more hours per day. Batteries alone cannot supply the required power. The EMILY fuel cell will produce environmentally friendly power for the on-board systems without ever having to start the engine. Connected to the on-board battery the fuel cell recharges the battery on demand, fully automatically and without requiring any user intervention. In operation the fuel cell produces almost no noise or odor, it is virtually undetectable and emission-free.