Lightweight and compact power sources are a critical need to a broad range of defense, homeland security and communication applications. Proton exchange membrane (PEM) hydrogen/air fuel cells coupled with chemical hydride fuels such as borazane which are gravimetrically high in extractable hydrogen content can provide quiet, lightweight solutions to the escalating energy demands of the modern soldier. Small, state-of-the-art PEM fuel cell systems have already been developed by Protonex Technology Corporation. Protonex is focused on developing a complete fuel cell based power solution (20W net electric) utilizing borazane fuel that will meet the difficult requirements for soldier power applications. The proposed system will be based on an innovative fueling design provided by snap-in borazane cartridges for prolonged mission length, maximum flexibility and high energy density