The M18 REDLITHIUM™ HIGH-OUTPUT™ HD12.0 battery pack provides 50% more power and runs 50% cooler versus M18™ REDLITHIUM™ HD9 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.