DEWALT 18V to 20V MAX Lithium-Ion Battery Adapter Kit (2 Pack) DCA2203C - The Home Depot
18V XRP Li-Ion Battery | DeWALT | DC9180
DeWalt Li-Ion Power Tool Battery Adapter - 18 to 20-Volt - Compatible for Most 18-Volt DeWalt Tools - Yellow DCA1820 | RONA
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