... Material: Brand -New ABS 4,long life,super-brightness led bulbs Feature:1. Battery(free maintenance):high capacity lead ... be more than 15 hours.2. When the LED bulbs is dark during usage,That means battery is ... 2. Please dont use when charging, it would burn LED bulb, or damage inner componenrs.3. Please dont ... charging.(Suggestion:charging in daylight time) Most powerful LED rechargeable Flashlight