M18™ Redlithium™ high output™ xc6.0 battery pack (2 pk) 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 provides increased power in extreme cold weather conditions (below 0f / -18c) and delivers more work per charge, driving corded replacement on the jobsite. the redlithium™ high output™ xc6.0 battery is fully compatible with 150+ m18™ solutions. *Product images are representative only.