Although fuel cell electric vehicles are still are in a pre-commercialization phase, hydrogen fuel cells currently are being used commercially in early market applications such as material handling and backup power. These early commercialization fuel cell deployments are helping improve hydrogen and fuel cell technologies and expanding their market potential. Fuel cell systems look particularly promising as replacements for batteries in material handling equipment (MHE, or more typically forklifts) in warehouse applications where operations extend for two or three shifts each day. In such applications, batteries generally need to be charged and replaced one or more times each day, which complicates logistics and increases overall labor costs. Fuel cell MHE have zero emissions, can operate for more than 12 hours without performance degradation, and can be fueled in minutes, making fuel cells an attractive alternative to conventional battery systems.