In the event of a power outage, the kit provides emergency lighting for constant current-operated LED lights, which are then powered by the internal battery. When the lights are turned off and the mains power fails, the emergency operation mode is activated. The emergency power battery kit is primarily designed for retrofitting lighting systems from the DOTLUX range, such as linear lights. It is universally applicable for all LED lights with external control gear operating at a voltage of 10-90 V DC. The emergency power battery kit includes an operational status LED with a mounting socket and a test switch for external installation. The battery kit does not replace the power supply of the LED light. The battery kit must be ordered in addition to the power supply. It features an automatic self-test function and is temperature resistant from -20 to +55 °C.