The adapter allows your M18 battery of to share batteries with 20V MAX tools for , saving money. Compatible for M18 18V lithium ion battery, such as 48-11-1862 48-59-1880 48-11-1852 48-11-1820 48-11-1822 48-11-1828 48-11-1840 48-11-1841 48-11-1850 48-11-1815 battery etc. Work for 20 volt , replacement for 20V Max battery DCB612 DCB609-2 DCB609 -2 DCB208 DCB206 DCB206-2 -2 DCB 205-2 -2 DCB201 -2 DCB230 DCB240 DCB240-2 Made of ABS material, durable and light. Specifications: Model: M18 Type: Battery Converter Adapter Ambient Temperature: 25 degrees Colour:black Material:ABS Package Contents: 1 * Battery Convert Adapter ( Adapter Only, Tools & Battery Not Included ) 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.