DEWALT 18-Volt to 20-Volt MAX Lithium-Ion Battery Adapter Kit with 20-Volt MAX XR Premium Li-Ion 5.0Ah Battery Pack (2-Pack) DCA2203CWDCB205 - The Home Depot
DEWALT 20-Volt Max 2 Amp-Hour Lithium Power Tool Battery in the Power Tool Batteries & Chargers department at Lowes.com
DEWALT XR 20-Volt Max 2-Pack 2 Amp-Hour Lithium Power Tool Battery in the Power Tool Batteries & Chargers department at Lowes.com