1. This adapter can make lithium batteries of for 18V use on for 18V Lithium cordless power tools. Not compatible with ( Power Tools). 2. Built-in battery lock fixed combination power , non- design. For a long time do not use, Please separate from the battery. 3. 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 Specifications: Model: MK18MTB Socket: 5Pin Type: Battery Converter Adapter Ambient Temperature: 25 degrees Above: Compatible with for 18V Tools Base: Compatible with for 18V lithium battery Colour:Black Material:plastic Package Contents: 1* Battery Converter Adapter Only the above package content, other products are not included. Note: Light 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.