UL listed Emergency Ballast for fluorescent lightings 1, 90 mins 2, life time of module: 5 years ... 3. IP20 ApplicationĀ·For emergency operation of Fluorescent lamps. For normal operation must be used a separate AC ... Most 2'-4' single, bipin T8 and T12, compact, HO or VHO fluorescent lampsEmergency operation 90Charging cycles 500Life time for battery pack ...