Features Screw Base --- This LED light bulb is equipped with a screw base, making installation just as convenient as a traditional light bulb. Stable Use---This portable light bulb features a non-slip and anti-loose design, ensuring that the battery and tools are perfectly matched, safe and reliable. Applicable scenarios --- Bulb light can be used both indoors and outdoors, e.g. B. in the house, in the basement, in the underground car park, in the field and other places. Compatible Battery---This E27 bulb is compatible with BL1815 BL1815B BL1820 BL1820B BL1830 and other 18V lithium batteries (not included). Ideal Replacement --- High brightness light can be easily installed and is an ideal replacement for the old and damaged parts. Specification: Item Type: LED Bulb Light Material: PC Luminous Flux: 700 White Light: 6500k Bulb Input Voltage: 12-60V Applicable to: for BL1815 BL1815B BL1820 BL1820B BL1830 BL1830B BL1840 BL1840B BL1850 BL1850B BL1860 BL1860B BL1845 BL1890 BL1890B and other 18V lithium batteries x 1 [shipped without batteries] Package List:1 x LED Bulb Light1 x Battery Adapter  Note:1. Since this product has fragile bulbs, it cannot be used and collided by gravity. It must be noted that the bulbs cannot collide with hard objects. 2. Since the interface between the bulb and the base is not sealed, pay attention to waterproof and anti leakage. 3. When replacing the bulb, be sure to separate the battery from the base (to avoid generating power). 4. Product shipping requirements: one LDE lamp and one base in the packaging carton, excluding batteries and tools electric drill. Package List 1 x LED Bulb Light 1 x Battery Adapter