Amazon.com: Lilocaja M18 Power Source Replacement for Milwaukee USB Charger Adapter 49-24-2371, with USB-C & USB Port & LED Work Light & DC Port, Compatible with Milwaukee M18 18V Li-ion Battery :
Amazon.com: BTRUI for Milwaukee M18 to M12 Battery Adapter, for Milwaukee 18V to 12V Converter, Convert for Milwaukee 18V Battery to 12V Battery Tools : Tools & Home Improvement
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
Amazon.com : 2 Pack 3000mAh M12 Replacement Battery for Milwaukee M12 Battery, Compatible with Milwaukee M12 XC Cordless Power Tools Replace for 48-11-2401, 48-11-2402, 48-11-2440, 48-11-2411 : Tools & Home Improvement