Milwaukee 48-11-1852 18 Volt Red Lithium XC 5.0Ah 2-Pack Battery

Delivers Up To 2.5X More Run-Time, 20% More Power And 2X More Life Than Standard Lithium-Ion Batteries. The M18 Redlithium XC 5.0 Extended Capacity Battery Pack Features Superior Pack Construction, Electronics, And Performance To Deliver More Work Per Charge And More Work Over The Life Of The Pack When Compared To Competitors.  The M18 Redlithium XC 5.0 Battery Features An Advanced Design, Protecting The Pack Against Harsh Jobsite Environments. This Protection Routes Water Away From The Electronics And Out Of The Battery Pack, Extends Run-Time And Life By Minimizing Heat, And Prevents Pack Failures From Vibration Or Drops.