In conjunction with research efforts started at Lawrence Livermore National Labs, UltraCell recently commenced developing high energy density power supplies for portable electronics applications. By using a reformed methanol fuel cell system, we have developed a system that can fit within the confines of current rechargeable laptop battery bays and provide 2-3x the energy supplied by LiIon batteries. This energy density edge overcomes the “power gap” that modern electronics systems encounter with batteries. We will outline our technical advances in the miniaturization of methanol fuel processors and PEM fuel cells that enable increased energy density when compared to direct methanol fuel cells (DMFC) and LiIon batteries.