1Ultra Wide Range Of Ambient Temperature: The solar controller can operate continuously within the working temperature zone, and will not reduce capacity or loading ability due to temperature effects. 2High Performance Electronics: The solar controller uses a 32 bit high speed processor and branded resistors, capacitors and other devices to ensure stable product performance and long service life. 3Lithium Battery Self Activation Function: The controller has a lithium battery self activation function, the solar panel can directly start the controller. The controller can start even when the voltage at the battery end is 0V or low voltage. At the same time, it supports the scenario of no battery, the photovoltaic panel can directly supply power to the load with constant voltage output. 4Comprehensive Electronic Protection: The controller has comprehensive electronic protection functions, including battery overcharge and overdischarge protection, reverse connection protection, short circuit protection, overload protection, anti reverse current protection, TVS lightning protection and so on. 5Adjustable Parameters: The controller can adjust the battery type and system voltage, and can lock the system voltage. Users can customize each parameter of the charging stage and adjust it according to the actual demand.