The MILWAUKEE MX FUEL REDLITHIUM FORGE HD12.0 battery pack delivers up to 2x more runtime, has COOL-CYCLE capability for high-speed cooling, and the longest life versus REDLITHIUM batteries. REDLITHIUM FORGE are Milwaukees most powerful, fastest charging, and longest life batteries. With 2X more runtime vs. MX FUEL REDLITHIUM XC406 (XC6.0), this battery delivers more work per charge allowing you to run your equipment longer and keep up with high demand applications. When paired with the MILWAUKEE MX FUEL Super Charger this battery charges in just 65-minutes to 100%. The MX FUEL REDLITHIUM FORGE HD12.0 is COOL-CYCLE capable. COOL-CYCLE Active Cooling System, provides high-speed cooling for less downtime. The active cooling feature works with MX FUEL batteries that have COOL-CYCLE capability. This battery pack delivers longest life for the most recharges and best performance over the life of the pack. The HD12.0 battery has the best protection from jobsite, weather, and environmental conditions. With ONE-KEY, track, manage and secure equipment from your mobile device or computer using the industrys largest Bluetooth community tracking network. If ever lost or stolen, prevent tampering with remote lockout capability. REDLINK Intelligence allows the battery to communicate with MX FUEL equipment in application to optimize performance. This battery is fully compatible with all MX FUEL equipment and chargers.