The M18™ REDLITHIUM™ HIGH OUTPUT™ HD12.0 battery pack provides 50% more power and runs 50% cooler vs M18™ REDLITHIUM™ HD battery packs. The massive increase in power elevates the performance of the entire M18™ system and drives the next breakthrough in M18 FUEL™, generating the power of 15 A 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™ HIGH OUTPUT™ HD12.0 is the best performing cold weather pack ever made, providing increased power in extreme cold weather conditions (below 0F / -18C). It provides the most work per charge of any professional power tool battery in the industry, driving full corded replacement on the jobsite. The REDLITHIUM™ HIGH OUTPUT™ HD12.0 battery is fully compatible with 150+ M18™ solutions.