The Triad AA features the intensity of a world-class duty light (220 lumens) with the worldwide convenience of AA batteries. Lithium power cells provide increased cold weather performance, extended shelf life and high energy density. The newly introduced lithium AA batteries by Energizer that ASP sells run eight times (8X) longer than their alkaline counterparts - ideal for duty use. The Triad AA comes with two Lithium AA batteries, a battery link case and a zippered travel case.The run time of the Triad AA is approximately 2 ½ hours.