Power through your most grueling, high-draw industrial applications with the ultra-premium Milwaukee® M18™ REDLITHIUM™ FORGE™ HD12.0 Battery Pack and Rapid Charger Kit. Engineered specifically for heavy-duty cordless equipment like large rotary hammers, high-torque impact wrenches, and commercial outdoor power tools, this next-generation battery sets a new benchmark for jobsite output. It generates a massive 50% more raw power than the previous-generation HIGH OUTPUT™ HD12.0 pack, allowing your tools to work harder under extreme resistance without binding, stalling, or clipping performance thresholds. As the most powerful, longest-lasting battery in the entire REDLITHIUM™ lineup, the FORGE™ HD12.0 is engineered with an advanced internal cell structure built to sustain the highest number of lifetime recharges while maintaining peak, fade-free performance over its lifespan. The entire internal electronics matrix is protected by a rugged, specialized chemical-resistant outer housing designed to guard against degradation from common workshop oils, greases, and industrial solvents. Paired with the included dual-system M18™ & M12™ Rapid Charger, this kit cuts down workspace downtime by charging up to 40% faster than standard baseline chargers—bringing this massive 12.0 Ah capacity cell to a full 100% charge in 130 minutes while actively monitoring cell voltage and temperature to protect your equipment.