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 18-Volt XRP Ni-Cd Rechargeable Battery with Security Strap for DEWALT 18-Volt Power Tools DC9096
DEWALT 18-Volt to 20-Volt MAX Lithium-Ion Battery Adapter Kit (2-Pack) DCA2203C