Features: The Adapter Compatible with Milwaukee XC/M18 RED Slider Lithium Battery Pack.(Not Compatible with V18 Old Battery). Only Fits WORX 20v USA VERSION Cordless Tools. (WARNING: Not Applicable For WORX 20v European Version Tools). Material: ABS Mold Injection Production + 3D Print. Professional Compact Design and Easy Installation. For a long time don't use, please separate from the battery. The adapter doesn't support charging for m18 batteries (please use the original charger) WARNING: Not Applicable For WORX 20v European Version Tools).. Not Compatible with Milwaukee V18 Old Battery). (Different PIN Order & Size). Make sure that the battery is fully inserted for normal use Please do not force into the battery pack, if the battery pack can not be installed, the installation method may be wrong Only Compatible with the tools, Not compatible with the charger, Don't use the adapter to charge the M18 battery. When you need to charge the battery, remove the converter Package Includes: 1*Adapter (Adapter Only, Battery & Tool Not Included)