DEWALT 20-Volt Max 4-Pack 2 Amp-Hour; 4 Amp-Hour Lithium Power Tool Battery in the Power Tool Batteries & Chargers department at Lowes.com
DEWALT 18-Volt to 20-Volt MAX Lithium-Ion Battery Adapter Kit (2-Pack) DCA2203C
Waitley Power Tool Battery Dcb200 For Dewalt 20v 18 V And 18vot Max Xr Tools 18v 6.0a Replacement Lithium Batterys - Rechargeable Batteries - AliExpress