Features and Benefits:Our M18™ & M12™ Rapid Charger charges battery packs up to 40% faster, reducing your downtime and maximizing your 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 your 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 you with the confidence that a substantial amount of work can be completed without having to wait for a full charge.Charges batteries up to 40% faster Charges all M12™ and M18™ batteries Sequential charging: automatically charges the second inserted pack once the first pack is fully charged REDLINK™ Intelligence: charger communicates with the battery pack to ensure optimum performance and extend life PRODUCT SPECIFICATIONSVoltage 12v and 18vBattery System M18Warranty 5 Year Limited WarrantyWeight 1.7 lbs