DUAL-CHANNEL DC electronic load, can be widely used in LED driver, switching power supply, power adapter, mobile power supply, charger, battery and other products of testing and aging. The potentiometer adjustment mode is adopted, which is simple to use and convenient to adjust. With constant current, constant voltage (CC, CV) working mode, its current mode can be used to simulate a resistive load to discharge the battery, to load the power supply; its voltage mode can be used to simulate a capacitive load to load the charger, and can simulate the constant voltage characteristics of LED to the LED drive power with load. It has perfect protective function, its performance and function are incomparable with traditional slide-wire resistor. It can greatly improve the production efficiency and reduce the cost.