Warehouse-Lighting.com’s emergency ballast for
300-650 lumen fluorescent fixtures has a temperature rating of 32 degrees
Fahrenheit to 112 degrees Fahrenheit. It comes with a high-temperature,
maintenance-free nickel-cadmium battery, charger and electronic circuitry in a
compact white metal case with 2 feet of flexible conduit at both of the
ballast’s ends. This product comes with a five-year warranty.