Milwaukee 48-59-2424-2462-20 M12 12-Volt Lithium-Ion 4.0 Ah and 2.0 Ah Battery Packs and Charger Starter Kit w/ 1/4 in. Impact DriverThe Milwaukee M12 XC High Capacity REDLITHIUM Battery is designed with superior pack construction, electronics and performance to optimize work per charge and work over pack life. It offers 4.0 Amp hours of runtime. with built-in Milwaukee durability, this battery runs cooler and performs in climates below 0F/minus 18C. Managed by Milwaukees exclusive REDLINK Intelligence, the battery features overload protection to prevent users from damaging their cordless power tools in heavy-duty situations, while the discharge protection prevents cell damage. The temperature management system and individual cell monitoring help maximize battery life. Use this REDLITHIUM extended-capacity battery to power all Milwaukee M12 cordless power tools. M12 Cordless 1/4 in. Impact Driver delivers unmatched fastening performance in a lightweight, tool belt portable design. A high performance motor delivers 0-2,500 RPM for increased application speed. Additionally, an on-board battery fuel gauge displays remaining run time.Fuel gauge onboard: displays remaining runtimeRedlink plus intelligence: provides optimized performance and overload protection using total system communication between tool, battery and chargerAll-weather performance: delivers fade-free power in extreme jobsite conditionsVersatility: powers 100+ Milwaukee M12 cordless solutionsResists drainage when not in useFlat-bottom base allows tools to stand upright3-year limited warrantyCompatible with all M12 cordless power toolsDelivers long life and run time with fade-free powerIncludes: (1) M12 Charger (48-59-2401), (1) M12 REDLITHIUM XC4.0 extended capacity battery pack (48-11-2440), (1) M12 REDLITHIUM CP2.0 compact battery pack (48-11-2420) and Includes: (1) M12 in. hex impact driver (tool only) (2462-20)DetailsBattery Power TypeLithium IonCharger IncludedCharger IncludedColor FamilyRedNumber of Total Batteries Included2Power Tool FeaturesNo Additional FeaturesVoltage (V)12 V