Upgrade Dewalt 14.4v Drill to Use 18v Battery : 3 Steps - Instructables
DEWALT Lithium in the Power Tool Batteries & Chargers department at Lowes.com
Mellif Cordless Sump pump for Dewalt 18V 20V Max Battery Electric Tran – Mellif Tools
DEWALT 18-Volt 2-Pack 2.4 Amp-Hour; 2.4 Amp-Hour Nickel Cadmium (Nicd) Power Tool Battery Kit in the Power Tool Batteries & Chargers department at Lowes.com
Amazon.com: for Dewalt 20V to 18V Battery Adapter, JJXNDO 2-Pack DM18D Upgraded Version DCA1820 Converter for Dewalt 18V/20V & for Milwaukee M18 18V Battery to Work for Dewalt 18V Nicad & NiMh
DEWALT 7.2V-18V NiCd/NiMH/Lithium-Ion Fast Charger