The M18™ REDLITHIUM™ FORGE™ 12.0Ah Battery delivers 50% more power than the HIGH OUTPUT™ 12.0Ah Battery, with high-speed cooling when paired with M18™ chargers with COOL-CYCLE functionality for less downtime in high-demand applications, 35 minute supercharge to 80%, and the longest life vs standard REDLITHIUM™ batteries. REDLITHIUM™ FORGE™ are Milwaukee's most powerful, fastest charging, and longest life batteries. The M18™ REDLITHIUM™ FORGE™ 12.0Ah Battery is COOL-CYCLE capable, with this Active Cooling System providing high-speed cooling for maximising efficiency for less downtime. An upgraded venting design maximises active cooling, while a patented ingress coating provides a protection barrier against water and debris. When paired with the M18™ Dual Bay Super Charger (M18DBSC), the M18FB12 charges to 80% in 35 minutes, and 100% in 45 minutes, allowing users to maximise productivity. This lithium-ion battery has the longest life, the most recharges, and maintains ultimate performance over the life of the battery. The battery is also designed with a resistant housing for increased protection against exposure to common oils, greases, and solvents. Built-in REDLINK™ Intelligence protects the battery from overloads, preventing users from damaging their cordless power tools in heavy-duty situations. The REDLITHIUM™ FORGE™ 12.0Ah battery is fully compatible with 250+ M18™ solutions.