IEC 62282-4-102:2017 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. This document applies to gaseous hydrogen-fuelled fuel cell power systems and direct methanol fuel cell power systems for electrically powered industrial trucks. 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. 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.