Milwaukee- M18™ REDLITHIUM™ XC 4.0 Extended Capacity Battery Pack 48-11-1840

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 40 Milwaukee M18™ cordless power tools