Amazon.com: Battery Converter for Milwaukee M18 18V Battery to Black & Decker 20Volt LBXR20 LB20 Battery, to Porter-Cable 20V Battery PCC685L PCC681L Battery, Work with Black & Decker and Porter Cable 20V
Porter-Cable PCC682L Battery, 20 V Battery, 1.5 Ah, 40 mi...
Rechargeabale 18V 2ah Power Tool Lithium Battery Compatible with Porter Cable - China Lithium Battery Compatible with Porter Cable, Power Tool Porter Cable | Made-in-China.com