1,High quality. 2,good starting function. 3,Long service life. 1,Have 36w,28w,18w tube and power less than 20w tube.2,Batter Power 2000w,1200w,800w.3,Charge time 294,Lighting time: more than 90.5,Waiting lamphouse luminance (Emergency) : nearly 70%.6,Dimention: 285*42*35mm. T5 Fluorescent electronic ballast