Exit light & Emergency lighting is comprised of lights, illuminated exit signs and combination exit sign and lighting units. These have their own power supply which allows them to mark the way out of a building in an emergency.
Like fire extinguishers, emergency lighting is required to be mains power tested in accordance with Australian Standard 2293 for 90 minutes on battery back up every six months. If exit lights are not regularly tested on battery backup the battery packs and circuitry constantly receive a charge and never get the chance to be used and therefore overheat and failed in much the same way your car battery or cordless drill would if treated in the same manner.
Sunwindled Fire & Safety supply, install maintain exit and emergency lighting. We also carry an extensive selection of batteries, bulbs and replacement parts to keep your equipment working properly.