48-11-1813 Milwaukee M18™ REDLITHIUM™ FORGE™ HD12.0 Battery Pack | The M18™ REDLITHIUM™ FORGE™ HD12.0 battery pack delivers 50% more power than the HIGH OUTPUT™ 12.0, high-speed cooling for less downtime in high-demand applications, 35 min supercharge to 80% and the longest life vs REDLITHIUM™ batteries. REDLITHIUM™ FORGE™ are Milwaukee's most powerful, fastest charging and longest life batteries. The M18™ REDLITHIUM™ FORGE™ HD12.0 is COOL-CYCLE™ capable. COOL-CYCLE™ active cooling system provides high-speed cooling for less downtime. Patented ingress coating provides increased protection to maximize active cooling through an upgraded venting design. The high-speed cooling feature works with M18™ chargers that have COOL-CYCLE™ capability. When paired with the M18™ dual bay simultaneous super charger, this battery charges in just 35 min to 80%, getting you back to work faster than ever before. This lithium-ion battery has the longest life, the most recharges and the top performance over