This adapter can make listed lithium batteries use on For Dewalt 20V MAX lithium cordless power tools, and let you Enjoy the advantages of extended run-time of Li-Ion Batteries on your existing 18V tools. Maximum initial battery voltage(measured without a workload) is 20volts,Nominal voltage is 18volts Allows for use of 18V Lithium batteries and replacement batteries in most batteries of for Makita:BL1860B/BL1860/BL1850B/BL1850/BL1840/BL1830B/BL1830/BL1820/BL1815,etc. Use for DEWALT 20V MAX lithium cordless power tools. Colour: Black material: plastic Package Contents: 2 * adapter Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.