Feature:1. Great Brightness: The battery powered work light bulb comes with adjustable brightness of 55006500K and 3501300lm, offering bright lighting.2. Standard Designs: The E27 12V 12W with standard threaded lamp holder also has a battery adapter, making the using and operation much easier.3. Matching Battery: Suits perfectly for 18V BL1815 BL1820 BL1830 BL1840 BL1850 BL1860, and the batteries are not included in this E27 bulb set.4. Wide Application: Ideal for both indoor and outdoor working, the LED work light bulb can be flexibly applied to basement, garage and so on.5. Quick to Install: Light in weight and compact in size as well, this E27 LED bulb ensures no slipping and perfect match, very simple to install.Specification:Item Type: Battery Powered Work Light BulbLamp Holder Parameters: 12W 12VMaterial: PCColor Temperature: 5500-6500KBrightness: 350-1300lmApplicable Battery: 18V lithium battery, shipped without battery. .Package List:1 xBattery Powered Work Light Bulb1 x Battery Adapter1 x User Manual