Key Features REDLINK™ Intelligence: Provides optimized performance and overload protection using total system communication between tool, battery and charger Best-in-class construction: Offers long-lasting performance and durability Fuel gauge onboard: Displays remaining runtime for less downtime on the job All-weather performance: Delivers fade free power in extreme jobsite conditions Versatility: Powers more than 60 Milwaukee® M18™ cordless power tools Includes (2) M18™ REDLITHIUM™ XC5.0 Extended Capacity Battery Pack 48-11-1852.