The MX FUEL REDLITHIUM XC406 battery pack provides you with maximum power and runtime for all of your MX FUEL equipment in a compact profile, helping make MX FUEL equipment solutions the lightest and most powerful in the industry. This lithium-ion battery is capable of charging in as few as 90-minutes from fully drained to full power. This battery pack delivers fade-free power, running cool, even through heavy applications. An onboard fuel gauge displays remaining charge with the push of a button. The pack is ONE KEY compatible, allowing users and crib managers to track and manage this pack. This battery is fully compatible with all MX FUEL equipment. The Milwaukee MX FUEL Battery Charger charges the MX FUEL CP203 Battery in 45-minutes and the MX FUEL XC406 Battery in 90-minutes, reducing downtime and increasing productivity. This battery charger accepts all Milwaukee MX FUEL Battery packs and features REDLINK Intelligence, communicating directly with batteries to monitor cell voltage, temperature and charge status to optimize the performance while maximizing the lifespan of the pack. An internal fan keeps the charger's electronics components cool during operation. 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. The charger features an integrated carry handle for easy transport, even with batteries attached.