Emergency Signs and Lights Rely on Different Battery
During regular operations, emergency exit signs and lighting are powered by a building's electrical grid. However, in the event of a power outage, the backup power reserve is activated, and the fixtures illuminate using an internal rechargeable battery as a backup power source. Given that these emergency exit signs and lights serve as crucial lifelines for building occupants during emergencies, their reliability is paramount. Building codes and life safety laws establish essential criteria for backup power to ensure their dependable functionality. A rechargeable internal battery is a requirement for emergency exit signs and lights, with a charging time of less than 24 hours. Additionally, they must deliver sufficient electrical current to keep the lamps illuminated for a minimum of 90 minutes when the unit is in use. There are four main types of batteries used in emergency exit signage and lighting: Lead Calcium batteries, Ni-Cad (Nickel-Cadmium) batteries, Lithium ...