Abstract: A fuel cell fluid dissipater dissipates excess air, water and unreacted fuel from a fuel cell and comprises a gas permeable and water absorbing dissipation media and a fluid intake assembly. The fluid intake assembly directs excess water and unreacted fuel and air from the fuel cell to the dissipation media where the excess water is directed to a bottom portion of the dissipation media and where the unreacted fuel and air are directed to a top portion of the dissipation media. An air stream is directed through the dissipation media such that the excess water and unreacted fuel and air in the media are dissipated to the environment.

Abstract: An electrical power generator comprising at least one fuel cell and at least one capacitor electrically coupled together in parallel is operated in a manner that reduces stress on the fuel cell and prolongs fuel cell operating life. The operation comprises: monitoring a current drawn by a load; monitoring a voltage across the capacitor; and operating the fuel cell to generate an electrical output within a target output range when either the monitored current or voltage are within a respective selected current and voltage range, the fuel cell output supplying the load and/or recharging the capacitor. The capacitor is configured to discharge stored electrical energy to the load when the load exceeds the target output range.

Abstract: A fuel cell fluid management system that transfers water vapor from a fuel cell stack's oxidant exhaust to the fuel cell stack's fluid supplies through membrane tubes; that coalesces and separates liquid water from the fuel cell's fluid exhaust streams for removal to the environment; that transfers heat from the fuel cell stack to the fluid supplies, and that disposes of purged fuel cell fuel. The fluid management system is shaped to close couple to the fluid ports of a corresponding fuel cell stack.