Light automatically comes on when power source is switched off. Maximum run time of 6hr to provide light for a prolonged period during power failure. 5W SMD LED Dual mode setting producing up to 500 Lumens which can illuminate a large room/area. Floodlight has a built-in 0.85m charging cable, battery and stand. Featuring charging level indicator. 3.7V 4.4Ah Li-ion battery.