The MX FUEL REDLITHIUM FORGE XC8.0 battery pack delivers up to 33% more runtime in a lighter weight design, has COOL-CYCLE capability for high-speed cooling, and the longest life versus REDLITHIUM batteries. REDLITHIUM FORGE is Milwaukee’s most powerful, fastest charging, and longest-life battery. With 33% more runtime and a lighter weight design versus MX FUEL REDLITHIUM XC406 (XC6.0), the battery allows you to run your equipment longer without sacrificing your ergonomic experience. When paired with the MX FUEL Super Charger this battery charges in just 45 minutes to 100%, getting you back to work faster than ever before. The MX FUEL REDLITHIUM FORGE XC8.0 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 the longest life for the most recharges and the best performance over the life of the pack. The XC8.0 has the best protection from jobsite