DEWALT Battery Adapter 18V to 20V, For Drills, Sanders and More, Charger Not Included, Bare Tool Only (DCA1820) - Amazon.com
Amazon.com: JJXNDO 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
Amazon.com: Power Wheel Adapter Battery Adapter for Dewalt 18v-20V Battery Dock Power Connector 14 AWG Robot Power Convertor for DIY Ride On Truck, RC Toys and Work Lights Replacement for DCB205 DCB204 :
DEWALT 18V-20V Battery Adapter and Charger Kit DCA2203C | RONA