Battery detectors in the nature of multimeters, endurance and performance; fuel cell evaluators, namely electronic apparatus for measuring tension, current, power, EIS (Electrochemical Impedance Spectroscopy); Electrolyzer analysis apparatus, namely, an apparatus for the study of performance of various Hydrogen production technologies, and measuring the quality of hydrogen produced by an electrolyzer; Fuel cell test system comprising : stacks, humidifier, heat exchanger, electrical heater, co...