The BAL 650C-29 (300-650 Lumens) fluorescent emergency ballast works in conjunction with the AC ballast to convert new or existing compact fluorescent fixtures into emergency lighting. The emergency ballast consists of a high-temperature nickel cadmium battery, charger and electronic circuitry in one compact red case. This ballast can be used with most 10W through 26W compact fluorescent lamps with integral starters, including (2-pin) quad or triple twin-tube compacts. It is also compatible with most electronic, standard, and energy-saving AC ballasts. If used in an emergency-only fixture, no AC ballast is necessary. The BAL650C-2 is not suitable for use in air handling heated air outlet fixtures, and wet or hazardous location fixtures