This Adapter Converts MAKITA 18V BL18Series Slider Lithium Battery to DW 20V DCB Series Slider Li-ion Battery. Product Built-in Battery Lock Fixed Combination Tool Battery. Suitable for MAKITA 18V BL1815/1820/1830/1840/1850/1860 Slider Li-ion Batteries. It allows your Makita to Share Batteries with DW Power Tools, Saving Money. For a long time do not use, Please separate from the battery. Colour: black + yellow Material: plastic Package Contents: 1 * Battery Converter Adapter (battery not included) 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.