This adapter can make listed lithium batteries use for 18V tools , and let you enjoy the advantages of extended run-time of Li-Ion batteries on your existing 18V tools. Allows for use of maximum 20V batteries and replacement batteries in most batteries for and for use of 18V -Lithium-ion batteries and replacement batteries in most of batteries Use for power tool machines with slide pack batteries. USB port for charging phones and powering equipment that uses usb, and USB line is not included . Type:DM18M Compatible for: for / Battery Features: Practical, with USB Port, Battery Converter Colour:black Material:ABS Package Contents: 2 x DM18M Battery Convertor Adapter Only the above package content, other products are not included. Note: Light reflection 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.