This International Standard covers interchangeability of power and data between micro fuel
cell power system and electronic devices to provide the micro fuel cell power system
compatibility for a variety of electronic device while maintaining the safety and performance of
micro fuel cell system. For this purpose, the standard covers power interfaces and its
connector configuration. The power management circuitry and power sharing methodology are
also provided. This standard also covers data communication protocol and its data
specification. Operation modes and alerts conditions are also provided for the means to
comply with the power control requirements of electronic device.
A micro fuel cell power system block diagram is shown in Figure 1. Micro fuel cell power
systems and MFC power units are defined as those wearable or easily carried by hand,
providing d.c. outputs that do not exceed 60 V d.c. and power outputs that do not exceed 240
VA. This standard covers the power and data interfaces between micro fuel cell power unit
and electronic device.