12v Rechargerable Battery Replacement for Milwaukee 48-11-2440 M12 XC Lithium-Ion Cordless Tool Li-ion Best-in-class construction: Offers long-lasting performance and durability. Provides optimized performance and overload protection. Fuel gauge onboard: Displays remaining runtime for less downtime on the job. All-weather performance: Delivers power in extreme jobsite conditions. Versatility: Powers most Milwaukee M12TM cordless power tools.