The Milwaukee New 18V 5.0 Resistant Battery (Model: 48-11-1850R) is a high-quality battery designed for heavy-duty use in automotive and manufacturing environments. It features a resistant housing that provides increased protection against exposure to common oils, greases, and solvents. With the same best-in-class performance as the standard Milwaukee M18 REDLITHIUM XC5.0 battery, this resistant battery offers 2.5X more runtime and 20% more power than standard lithium-ion batteries. It is built with durability in mind, running cooler and performing well in cold weather climates. The battery also includes built-in REDLINK Intelligence for overload protection and discharge protection to prevent cell damage. With an integrated temperature management system and individual cell monitoring, this battery maximizes its lifespan. It is fully compatible with all 200+ Milwaukee M18 solutions, making it a versatile choice for professionals.