New And New Replacement Portable Rechargeable Lithium Ion Battery, 20v, 4000 Mah, Suitable For Power Tool Dewalt, Dcb201 - Rechargeable Batteries - AliExpress
DEWALT 20V MAX Compact Lithium-Ion 4.0Ah Battery Pack (2 Pack) DCB240-2 - The Home Depot
DEWALT 20 2-Pack 6 Amp-Hour; 6 Amp-Hour Lithium Battery Kit in the Power Tool Batteries & Chargers department at Lowes.com