FCTS-S Series aims to provide an accurate, reliable and convenient test platform for fuel cell stacks. The system mainly consists of gas flow and pressure control unit, gas temperature and humidity control unit, thermal management system, safety protection unit, the electronic load, and cell voltage monitoring unit. Online data monitoring and processing by the test platform enables analysis of the performance, service life, reliability and safety of the stack under test. It is applicable to the R&D, calibration and EOL testing of fuel cell stacks