12v 3000mAh Replacement M12 Battery Pack for Milwaukee M12 48-11-2440 M12 REDLITHIUM XC Li-ion Lithium-Ion Rechargerable Replacement Battery (1 Pack) 12v M12 Extend battery Replacement for Milwaukee 48-11-2440 M12. 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.