... Voltage:3.7V2)Begin lighting:>3000Lx Lighting 11h:>1500Lx3)Battery life:>500timesa) Small,Light weight,Easy to carry and ... portable, made of lamp holder, cable and battery (including lithium battery, security device and the battery slot, etc.). The lamp is equipped with ... replace the light source and add additional acid for the battery. The battery has over-voltage, over-current, over-discharge, over ...