Professional LED lamps with additional function. Product features: Operating time in battery mode: up to 2 hours (100 lm). Battery charging time: 4 hours. Battery technology: lithium-ion. Battery charges while the lamp is connected to the mains. Battery integrated, not replaceable. Product advantages: Light even in the event of a power failure thanks to the backup battery. Very long service life of up to 25,000 hours. 100% light immediately, no warm-up time. Variable use with direct, alternating or battery voltage possible. Areas of application: Places that require quick illumination. Hotels, restaurants. Outdoor applications only in suitable luminaires.