The solar street light controller is used in the solar lithium battery system, and is responsible for coordinating the work of solar panels, lithium batteries (gel batteries) and LED light sources. It is one of the most critical components in the solar street light system. It is efficient and safe for the entire solar street light lighting system. Provide guarantee for the operation. As a solar street light controller, it should have the following most basic functions: charge the battery in the best charging state, automatically turn on and off the street light or load, and have overload protection, short circuit protection, reverse discharge protection, and reverse polarity protection. , Lightning protection, undervoltage protection, overcharge protection, load recovery settings. When choosing a solar controller, you should pay attention to: One: You should choose a controller with lower power consumption. The controller works continuously for 48 hours. If its own power consumption is large, it will consume part of the power. It is best to choose a power consumption of 5 mA. The following controller. Two: Choose a controller with high charging efficiency, a controller with a three-stage charging control mode of strong charging, balanced charging, and floating charging, using MCU intelligent control, and through internal calculations, it can always charge the battery with the maximum power, especially In winter or during periods of insufficient light, the charging mode using MCU intelligent control is about 20% more efficient than non-MCU intelligent controllers. 3: With high-precision control, high-precision is the comprehensive embodiment of product design, the embodiment of excellent material selection, and the embodiment of production technology. Non-high-precision control solar street light controllers often lead to high repair rates, poor reliability, and low market prices due to unreasonable product design, poor material selection, etc. 4: Only use a controller with two separate controls, which is convenient for power adjustment of the entire lamp. At night when pedestrians are scarce, one or two lights can be automatically turned off to save electricity, and the power of LED lights can be adjusted. In addition to selecting the above power saving function, when setting the controller undervoltage protection value, try to adjust the undervoltage protection value to ≥10.5V to prevent overdischarge of the lithium battery.