The M18™ REDLITHIUM™-ION HIGH OUTPUT™ 12.0Ah Battery provides 50% more power and runs 50% cooler than M18™ REDLITHIUM™-ION battery packs. The massive increase in power elevates the performance of the entire M18™ system and drives the next breakthrough in M18 FUEL™, delivering the power of corded product. It delivers fade-free power and runs substantially cooler through heavy applications, allowing tradesmen to push their cordless tools harder and longer than ever before. The M18™ REDLITHIUM™-ION HIGH OUTPUT™ 12.0Ah Battery is the best performing cold weather pack ever made, providing increased power in extreme cold weather conditions (below -18°C). It provides the most work per charge of any professional power tool battery in the industry, driving full corded replacement on the jobsite.