The Milwaukee M18 18V Lithium-Ion REDLITHIUM FORGE HD 12.0 Ah Battery Pack is a powerful and long-lasting battery suitable for high-demand applications. With 50% more power than the HIGH OUTPUT 12.0, this battery features a COOL-CYCLE Active Cooling System for reduced downtime. It can supercharge to 80% in just 35 minutes and offers the longest life compared to other REDLITHIUM batteries. Ideal for demanding tasks, this battery ensures optimal power and runtime, making it a reliable choice for professionals.