The MILWAUKEE M18 REDLITHIUM HIGH OUTPUT XC8.0 Battery Pack and the M18 REDLITHIUM HIGH OUTPUT XC6.0 Battery Pack provides 50% more power and runs 50% cooler vs M18 REDLITHIUM XC battery packs. The optimized combination of size and increased power provides a great solution for the entire range of M18 products. 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 XC6.0 and M18 REDLITHIUM HIGH OUTPUT XC8.0 provide increased power in extreme cold weather conditions (below 0F / -18C) and deliver more work per charge, driving corded replacement on the jobsite. The REDLITHIUM HIGH OUTPUT XC6.0 battery and M18 REDLITHIUM HIGH OUTPUT XC8.0 are fully compatible with 250+ M18 solutions.