The Philips Bodine ELI-S-20 Emergency Lighting Micro Inverter works in conjunction with a fluorescent or LED fixture to create an emergency lighting system. The ELI Series operates a maximum load of 20 or 25 W at unity power factor. It allows the connected fixture(s) to be on, off, switched or dimmed without affecting emergency operation. Each unit consists of a high-temperature nickel-cadmium battery, charger and electronic circuitry in one steel case. The ELI-S-20 provides power to the input side of the fixture, including the ballast, and can be used with indoor or outdoor emergency fixture applications.