Technical data The most important data Weight excl. battery* 1.6 kg Battery voltage 14.4–18 V Luminous flux* 1,900 lm Max. operating time 14.4 V 80 mins/Ah Max. operating time 18 V 100 mins/Ah Number of brightness levels 2 GLI 18V-1900 Professional: Further information Product Highlights The GLI 18V-1900 Professional is Bosch's versatile floodlight in the 18 V category. Its powerful LED is capable of producing up to 1,900 lumens for excellent lighting conditions. It also features two brightness settings and five flexible adjustment angles, and has a 5/8"-tripod thread for quick adaptation to any work situation. Futhermore, it is excellent for lighting up entire working areas for a full working day. This floodlight is compatible with all Bosch Professional 18 V batteries (Professional 18V System).