Warehouse-Lighting.com’s 54W 800 lumen T5HO
ballast has a temperature rating of 32 degrees Fahrenheit to 112 degrees
Fahrenheit. It includes a high-temperature, maintenance-free nickel-cadmium
battery, charger and electronic circuitry in a compact white metal case. A
solid state charging indicator light lets you monitor the charger and battery.
This emergency ballast comes with installation hardware and a five-year
warranty. It will provide reduced illumination during emergencies for at least