The Milwaukee 18V M18 Battery Can Be Used As A Replacement For The Dewalt 20V Product Details ?Function?Allows you use of the M-18 18V Lithium batteries and enables the 20V Max hand held tool to work well. (Battery not included, adapter only) ?Compatibility?This ML18DL convert adapter top port compatible with Dewalt 20V Max hand held cordless power tools. Convert adapter bottom port compatible with Milwaukee M-18 18V Lithium Batteries to Replacement for Dewalt 20V Batteries. ?Easy to Use?The adapter is easy to install and remove. ?Notice?This Adapter cannot be used for battery charging. Please remove adapter before charging battery. ?Safety Reliability?Safe Desigh, ABS high quality material. All Kotoate Adapter comply with CE, FCC and RoHS testing standards. Please feel free to contact us if you have any questions. Payment We accept PayPal and credit cards via PayPal. Taxes - US We collect sales tax, as required by law. Shipping We make every effort of shipping within 3 business day of payment clearing. The estimated delivery time is 2 - 5 business days from the shipping date. Policies If you do need to return your item, please contact us via email (you will receive an email when your product ships with additional details - Subject: Important information about your purchase). You will then be provided with a return shipping label and packing slip. Pack the item carefully. Include the packing slip, apply the shipping label, and return the item within 30 business days of the date you request a return, or your return will be canceled. Once we receive your order we will inspect the return. Please allow up to 5 business days of receiving the returned item for your refund.