DEWALT 18 Volt to 20 Volt MAX Battery Adapter Combo Kit - Bliffert Lumber and Hardware
DCB200 20V 6Ah replaceable Li ion battery compatible with Dewalt 18 Volt power tools lithium Batteries|Replacement Batteries| - AliExpress
DeWalt 7.2-Volt to 18-Volt Nickel Cadmium/Lithium-Ion Cordless Jobsite Radio and Battery Charger (California Compliant) - Carr Hardware
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