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The split type solar street lamp refers to the solar panel and LED lamp in the lamppost, the colloidal battery and the solar street lamp controller at the bottom of the lamp pole. As the distance of the controller distance to the LED lamp is far, up to 20 meters high, the driving LED lamp is driven by the boost and constant current, and the high voltage small current drives the LED lamp, which greatly reduces the loss of the line and improves the efficiency of the system.