Built-in battery lock fixed combination power , non-slip design. For a long time do not use, Please separate from the battery. Can not be used for power charging, this adapter will not fit into any chargers. If you need to charge your power tool batteries , please use the battery chargers. Model: MT18WORX6 Type: Battery Converter Adapter for 18V BL Series Battery Conversion for 20V 6PIN Lithium Battery Tool Colour:Black Material:Plastic Package Contents: 1 x Adapter(Adapter only, tools and batteries 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.