PORTER-CABLE 20-Volt 2-Pack 1.5 Amp-Hour; 1.5 Amp-Hour Lithium Power Tool Battery at Lowes.com
Powerextra 2 Pack 18V 3700mAh Replacement Battery for Porter Cable PC18B 18 Volt Cordless Tools Batteries - Newegg.com
PORTER-CABLE/STANLEY/BLACK&DECKER 20V Li-ion Batteries to Dewalt DC9096 Adapter | eBay
PORTER-CABLE 32-Piece 12-volt Variable Speed Oscillating Multi-Tool Kit with Soft Case (2-Batteries Included) in the Oscillating Tool Kits department at Lowes.com