This document covers performance test methods of fuel cell power systems intended to be used for electrically powered industrial trucks. The scope of this document is limited to electrically powered industrial trucks. Hybrid trucks that include an internal combustion engine are not included in the scope. The scope of this standard will be applicable to material-handling equipment, e. g. forklifts. This document applies to gaseous hydrogen-fuelled fuel cell power systems and direct methanol fuel cell power systems for electrically powered industrial trucks. The following fuels are considered within the scope of this standard: gaseous hydrogen, and; methanol. This document does not apply to reformer-equipped fuel cell power systems. This document covers fuel cell power systems whose fuel source container is permanently attached to either the industrial truck or the fuel cell power system. A fuel source container of the detachable type is not permitted. This document applies to DC type fuel cell power systems, with a rated output voltage not exceeding 150 V DC for indoor and outdoor use. Fuel cell power systems intended for operation in potentially explosive atmospheres are excluded from the scope of this document. This document does not cover the fuel storage systems using liquid hydrogen. All systems with integrated energy storage systems are covered by this document. This includes systems, for example, batteries for internal recharges or recharged from an external source.