Delivers more runtime, power and speed than standard Lithium-Ion batteries. The M18™ REDLITHIUM™ XC extended capacity battery is designed with great pack construction, electronics and performance to optimize work per charge and work over pack life. It offers 3 Ah of runtime. With built-in Milwaukee® durability, this battery runs cooler and performs in climates below 0 deg F/-18 deg C. Managed by Milwaukee's exclusive REDLINK™ intelligence, the battery features overload protection to prevent you from damaging your 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 extended-capacity battery to power your Milwaukee® M18 cordless power tools.