The MILWAUKEE M18 & M12 Rapid Charger charges battery packs up to 40% faster, reducing user downtime and maximizing user productivity. The battery charger accepts all Milwaukee M18 and M12 batteries, providing a charging upgrade for both systems. The charger features REDLINK Intelligence and communicates directly with batteries to monitor cell voltage, temperature, and charge status to optimize the performance and extend the life of the pack. As an added level of communication, the charger indicates when the battery reaches an 80% charge, providing users with the confidence that a substantial amount of work can be completed without having to wait for a full charge.