... of basic parameters: 1, solar cells: 20Wp, monocrystalline silicon or polycrystalline silicon (silicon imports, domestic package);2,Battery: 17AH × ... , Light Source: High-brightness LED (chip, imported, domestic package), 5 round nose.5, Lamp Poles: Height ... -corrosion treatment (style, color optional);6, Controller: solar intelligent controller, overcharge and over discharge protection, light control ...