One Milwaukee 48-11-1850 M18™ XC 5.0 AH 18 Volt Extended Capacity Battery 2 PACK Missing its retail box Overview THe M18™ REDLITHIUM™ XC5.0 Battery delivers up to 2.5X more runtime, 20% more power and 2X more recharges than standard lithium-ion batteries. The lithium-ion battery pack features superior pack construction, electronics, and performance giving you more work per charge and more work over pack life than any battery on the market. The rechargeable battery also offers you 5.0 amp-hours of runtime. Each battery pack is durably built for heavy-duty use, runs cooler, and performs in climates below 0°F/-18°C. This protection routes water away from the electronics and out of the battery pack, extends your battery's run-time and life by minimizing heat, and prevents pack failures from vibration or drops. Built-in REDLINK™ Intelligence protects the battery from overloads, preventing you from damaging your cordless power tools in heavy-duty situations, while the discharge protection prevents cell damage. An integrated temperature management system and individual cell monitoring help to maximize your battery's life. Switch to our REDLITHIUM™ XC5.0 Battery Pack to instantly upgrade the runtime and durability of your Milwaukee M18™ cordless tools. Features REDLINK™ Intelligence: Provides optimized performance and overload protection using total system communication between tool, battery and charger Best-in-class construction: Offers long-lasting performance and durability Fuel gauge onboard: Displays remaining runtime for less downtime on the job All-weather performance: Delivers fade free power in extreme jobsite conditions Versatility: Powers more than 60 Milwaukee® M18™ cordless power tools