Description change to:M12 REDLITHIUM 4.0AH XC BAT. Milwaukee Electric Tool 48-11-2440 M12 12V4.0 Battery Pack features Redline Intelligence that Provides Optimized Performance and Overload Protection Using Total Communication Between Tool, Battery and Charger, Offers Long Lasting Performance and Durability, all-Weather Performance Delivers Fade Power In Extreme Jobsite Conditions, Powers Most Milwaukee M12 Cordless Power Tools. Item comes in bulk packaging.