... provide 12V voltage to makes energy-saving lamp lighting; Charging function: provide 5V voltage to charge ... MP3, MP4, etc.)Configuration Mono/Poly high-efficiency solar panel: 10W, 18V, 5m connected cable, life ... , the red LED lights means charging. When the battery is full, LED lights automatically switch off; ... the start voltage, the green LED is lighting, 12V lighting and 5.5V charge both output; when ...