Milwaukee 48-11-1850R M18 18V 5.0 Ah Lithium-Ion XC Extended Capacity Resistant Battery 2 Pack The Milwaukee M18 XC5.0 Resistant Battery is built with a resistant housing, providing increased protection against exposure to common oils, greases, and solvents found in automotive and manufacturing environments. Each battery pack is durably built for heavy-duty use, runs cooler, and performs in cold weather climates. Features: Best-in-class construction: Resistant housing designed to provide increased protection against exposure to common oils, greases, and solvents All-weather performance: delivers fade power in extreme jobsite conditions Fuel gauge onboard: Displays remaining runtime REDLINK™ Intelligence: Our battery circuitry provides optimized performance and overload protection using total system communication between tool, battery, and charger Versatility: Powers more than 200+ Milwaukee® M18™ cordless power tools Pack Includes: (2) Milwaukee 48-11-1850R M18 18V 5.0 Ah Lithium-Ion XC Extended Capacity Resistant Battery Pack