DEWALT 20 Volt MAX XR Lithium-Ion 5.0 Ah Premium Tool Battery (2-Pack) - Power Townsend Company
DEWALT DCB204 20 Volt MAX XR 4.0 Ah Lithium-Ion Battery — Toolbarn.com
DEWALT XR 20-V 2-Pack 5 Amp-Hour; 5 Amp-Hour Lithium-ion Battery and Charger (Charger Included) in the Power Tool Batteries & Chargers department at Lowes.com