DC9098 DC9099 Battery Replacement for Dewalt 18V Battery + Fast Replacement DC9310 Charger Compatible with Dewalt 7.2-18V Ni-Cad Ni-Mh 18V Charger - - Amazon.com
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
Dutyone 2Pack 20V Battery Adapter DCA1820 Replacement for Dewalt 18V Tools Convert 20V Lithium On Battery DCB204 DCB205 for 18V NiCad and NiMh Battery Tools - - Amazon.com
Amazon.com: Fancy Buying Replacement Battery Adapter DCA1820 for Dewalt 18V Tools, Convert 18V / 20V Lithium Battery to NiCad/NiMH Battery, Makes The Battery can be Used for Nickel Drill and Charger :