The Feit Electric SHOP4/840/100/MOTBAT 4 ft. rechargeable battery LED Shop Light comes fully assembled and provides added function to any residential or commercial area. High-efficiency LEDs output 1000 lumens of light using only 7.5 watts. An integrated 100Wh battery keeps the lights on for up to 13 hours when not connected to power. Switch to the low setting for 300-lumen light and up to 40 hours of use. Built-in motion sensors automatically turn the shop light on when motion is detected, adding to energy savings and convenience. The ultra-lightweight fixture can be installed with the included two magnetic mounting brackets (for quick removal and recharging) or flush mounted using screws. Choose a no-humming, battery-powered utility light for garages, workshops, sheds, studios, or anywhere you need more light. 4000K Cool White light provides the perfect balance of warm and cool color temperatures for task lighting and working on projects.