DEWALT 20V MAX Lithium-Ion 4.0Ah Compact Battery Pack (2-Pack) and (2) 20V MAX XR Premium Lithium-Ion 5.0Ah Battery Packs DCB2402WDCB2052 - The Home Depot
DEWALT 20-Volt 4 Amp-Hour; Lithium Power Tool Battery in the Power Tool Batteries & Chargers department at Lowes.com