Main technical specifications 1. Rated capacity 4.5Ah 2. Nomial voltage 4v 3. Lighting times more and equal 15 4. LED light source A. Rated voltage 3.3v B. Current of main light source 300MA C. Current for auxiliary light source 110MA 5. Maxi lightness at 1M A. Begin lighting 1300LX B. Lighting 11 h 900LX 6. Weight 830g 7. Nos of battery cycle 300 times