The MILWAUKEE® M18™ Dual Bay Rapid Charger charges battery packs up to 40% faster, reducing downtime and maximizing productivity. The charger accepts all M18™ batteries and is able to charge two batteries at the same time. The 18-volt battery charger features REDLINK™ Intelligence, communicating directly with batteries to monitor cell voltage, temperature and charge status to optimize their performance and extend the life of the pack. As an added level of communication, the lithium-ion battery charger indicates when the battery reaches an 80% charge, providing confidence that the batteries can complete a substantial amount of work without waiting for a full charge.