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, Powers More Than 100 Milwaukee M18 Cordless Power Tools, M18 And M12 Rapid Charger Charges Packs Up To 40% Faster, Reducing Downtime And Maximizing Productivity, Compatible With All M18 Tools