DEWALT 18-Volt 2-Pack 2.4 Amp-Hour; 2.4 Amp-Hour Nickel Cadmium (Nicd) Power Tool Battery Kit in the Power Tool Batteries & Chargers department at Lowes.com
Dewalt DCB184 Duopack - 2 x battery 18 Volt 5.0Ah Li-Ion
DeWalt 18V NiCad Rechargeable Battery Rebuild Kit
DEWALT 18V to 20V MAX Lithium-Ion Battery Adapter Kit (2 Pack) DCA2203C - The Home Depot