"Basic functions: Innovative maximum power point tracking technology, which can significantly improve the energy utilization rate of the solar system, and the conversion efficiency is as high as 97%; Quickly scan the entire I-V curve, and efficiently track the maximum power point; Three types of lead-acid batteries, sealed, colloidal, and open type, and lithium battery series charging programs are optional; With automatic protection functions for overcharge, overdischarge, overload and short circuit; RS485 communication interface, multi-machine communication is possible, and it is convenient to view the operating parameters of the controller; MPPT control features This controller is used in solar off-grid power generation system to automatically adjust battery charging and discharging. It has an advanced tracking algorithm to obtain the maximum power of the solar cell components and charge the battery; at the same time, its low voltage disconnect (LVD) function can prevent the battery from over-discharging and causing damage. The battery charging process of the MPPT controller is optimized to extend battery life and improve system performance. Its comprehensive self-test function and electronic protection function can avoid damage caused by installation errors and system failures. Although the controller is easy to operate and use, in order to allow you to better use all the functions of the controller and improve your photovoltaic system, please read the instructions and instructions in this manual carefully.