The M18™ REDLITHIUM™ FORGE™ 8.0Ah Battery delivers HIGH OUTPUT™ 12.0Ah power in a smaller size, 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 REDLTIHIUM™ FORGE™ 8.0Ah delivers 8 amp hours of runtime, but with the same power as the M18™ REDLITHIUM™ HIGH OUTPUT™ 12.0Ah Battery in a smaller size and lighter weight design, delivering fast application speeds in demanding applications. The M18™ REDLITHIUM™ FORGE™ 8.0Ah 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 M18FB8 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™ 8.0Ah battery is fully compatible with 250+ M18™ solutions.