The M12 REDLITHIUM Battery is designed to optimize work per charge and work over pack life on the jobsite. This battery is lighter and smaller than compact NiCd batteries and offers 1.5 amp-hours of runtime while running cooler and performing in climates below 0°F/-18°C. Milwaukee’s exclusive REDLINK Intelligence provides battery overload protection to help 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 improve battery life. 48112401 48-11-2401