Priced aggressively in volume purchases, the PC100, a 100-farad ultracapacitor can increase battery operating life while reducing battery size in automatic meter readers, automotive applications, black box data recorders for aviation, backup power for UPS applications, or any other product requiring pulsed power, high cycle reliability, and/or low maintenance. Measuring 34 x 55 x 17 mm, the PC100 caches approximately 300 Joules of energy at a nominal 2.5 volts for high-powered discharges ranging from fractions of a second to one minute. Its small size and pulsed power capacity can decrease the weight and cost of batteries in devices requiring bursts of power. In addition, the PC100 can employ extended back-up power availability, allowing critical information and functions to remain available during dips, sags, and outages in the main power supply or battery charge. The PC100 is packaged in a durable, lightweight, hermetically sealed stainless steel prismatic can. It features easily accessible, screw terminals and an electrostatic storage capability that can cycle hundreds of thousands of charges and discharges without performance degradation.