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 Milwaukee's most powerful, fastest charging, and longest lasting 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 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. The HD12.0 battery has the best protection from jobsite, weather, and environmental conditions. With ONE-KEY™, you can track, manage and secure equipment from your mobile device or computer using the industry’s largest Bluetooth® community tracking network. If this battery is ever lost or stolen, you can 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.