DEWALT Battery Adapter 18V to 20V, For Drills, Sanders and More, Charger Not Included, Bare Tool Only (DCA1820) - Amazon.com
DeWalt 18v battery adaptor to old DeWalt xrp pushin tools replace DC9096, DC9180 | eBay
Amazon.com: EID for Dewalt 20V to 18V Battery Adapter, 2-Pack DM18D Upgraded Version DCA1820 Converter for Dewalt 18V/20V & for Milwaukee M18 18V Battery to Work for Dewalt 18V Nicad & NiMh