1.Please open back cover and pull out power line when charging, and insert to AC110-220V power socket, the indicator lights and fully charge with 15 hrs.
2. Push the switch to first gear(week light) can be used continusly for 20hrs, second gear (strong light) can be used continously for 12 hrs, please push the switch back to original place when stop illumination.
3. When the LED bulb is dimming during use, the battery is under fully discharge, at this moment, in order to protect the battery, pls. charging immediately. Do not charge after the LED bulb is dark since batter is eary damaged in this way.