1. This adapter can make lithium batteries of for 18V use on for 18V Lithium cordless power tools. Not compatible with HPT ( Power Tools).2. Built-in battery lock fixed combination power tool battery, non-slip design. For a long time do not use, Please separate from the battery.3. Can not be used for power tool battery charging, this adapter will not fit into any chargers. If you need to charge your power tool batteries , please use the battery chargersSpecifications:Model: MK18MTBSocket: 5PinType: Battery Converter AdapterAmbient Temperature: 25 degreesAbove: Compatible with for 18V ToolsBase: Compatible with for 18V lithium batteryColour:BlackMaterial:plasticPackage Contents:1* Battery Converter AdapterOnly 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.