H₂ ECOnomy’s ProFC-XU™ series air-hydrogen PEM fuel cells provide maximum power from 13 watts to 130 watts, depending on the model. Designed for demonstration and study of fuel cell operation, these PEM fuel cell stacks are offered in 1 to 10-cell models. They produce 13 to 130 watts of power at 0.6 to 6.0 V. This is more than enough power to keep your notebook computer running. ProFC-XU™ provides a good model of the systems that are being used in various applications.