Battery Construction Light GLI 18V-1200 C. The GLI 18V-1200 C Professional is the compact and robust Bosch construction light from the 18V range. It features 12 powerful LEDs with up to 1,200 lumens for excellent illumination. This construction light is dust-tight and splash-proof thanks to a robust battery cover compliant with IP 64. The light can be conveniently operated via smartphone, allowing for quick and easy remote adjustments. It offers two brightness levels, five flexible standing positions, and a 1/4" tripod thread for quick adaptation to any work situation. This construction light is ideal for illuminating entire work areas throughout the workday. The device is compatible with all Bosch Professional 18V batteries (Professional 18V System). The battery compartment cover does not close completely when using a ProCORE18V 12.0Ah battery.