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
Milwaukee M18 CT 18 V 2 Ah Lithium-Ion Compact Battery Pack 1 pc - Ace Hardware