The lighting board with 24 5mm high brightness LED lamp is made of high brightness (equivalent to an ordinary desk lamp brightness of a lamp) is surrounded with fixing screw holes for easy fixing back light board in favor of large-scale distribution of copper cooling of the LED. Input voltage: 10-13V; Current: about 120mA; Power: 1.3W. With a light board: on the study can be used as learning and reading. Then the brightness of two light board will double welded components can be used as studio lights. The light board a considerable energy saving use a stable 12V DC power supply the maximum voltage can not exceed 13V otherwise it will burn out light board if connected 12V battery the battery is fully charged voltage as high as 14V it can not be directly powered by the battery need to go through in order to use the buck. A 12V4A battery is fully charged then a light board you can light up about 20-30 hours; 12V 10AH battery is fully charged can light 60-70 hours.