12V to 18V battery charger Milwaukee REDLITHIUM-ION M12-18C
Professional M12 18C Li ion Battery Charger for Milwaukee 12 V 14.4V 18V C1418C 48 11 1815/1828/1840 M18 M14 M12 Lithium Battery|Instrument Parts & Accessories| - AliExpress
Amazon.com: M12 M18 Multi-Voltage Battery Charger Replacement for Milwaukee - Lasica 3.0A 12V/18V 48-59-1812 Rapid Charger Compatible with Milwaukee M12 or M18 XC Lithium Heated Jacket Power Tool Battery Packs : Tools
Amazon.com: Battery Charger, 12V-18V, for Milwaukee, for Rechargeable Batteries, for M12-18C M18, Auto-Safety Feature, Fast Speed of Charging, Over-Charge Protection, Red(US Plug) : Tools & Home Improvement