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
DEWALT 20V MAX Compact Lithium-Ion 2.0Ah Battery Pack (2 Pack) DCB203-2 - The Home Depot
DEWALT Lithium in the Power Tool Batteries & Chargers department at Lowes.com
2Pack 18V Battery for Dewalt 18 Volt XRP Battery DC9096-2 DC9098 DC9099 DW9096 - Walmart.com