An industrial truck, such as a fork-lift truck, has an electrical drive system and an energy supply based on gaseous media. At least one pressure vessel for the storage of at least one gaseous medium is installed in a mounting device which can be easily replaced together with the pressure vessel in the lower portion of the industrial truck (5) between the axles (7). Devices necessary for the generation of electrical energy from the gaseous medium can be advantageously installed in the mounting device.