This paper presents a study on the design, construction, and performance test of an electric-assist bicycle powered by a solid polymer fuel cell system. The implementation uses ready-made fuel cell components assembled on an ordinary pedaled bicycle to upgrade the bike into an electric vehicle. An empirical method is used to determine the tracking power, which is obtained at 400 W. Mechanical construction consists of the determination of equipment lay-out and packaging and electronics and control system, taking into account safety and hazard factors. This configuration results in the electric bike running at a maximum speed of 20 km/hr, with acceleration within 15 seconds. The control system can maintain speed at an ascending slope of about 25 degrees. For hydrogen supply, a metal hydride cylinder is used. Metal hydride storage is very efficient, showing by a cylinder with dimensions 3.2 inches in diameter and 8.8 inches long had 370-liter hydrogen capacity. Such an amount can supply fuel to the fuel cell for two (2) hours at maximum load. The electric-assist bicycle is also equipped with a 12 Amp-24 Volt battery for backup, mounted at the middle part of the bike. The fuel cell components are arranged at the rear of the bike.

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I. Djunaedi and H. Wahyu, “Electric bike based on hydrogen fuel cell system [Spfc- 400 W],” International Journal of Technology and Engineering Studies, Vol. 1 , no. 1, pp. 26-30, 2015.