Milwaukee 48592440B M12 REDLITHIUM XC 4.0Ah Starter Kit, 12V, Battery, Charger, and Bag

M12 REDLITHIUM XC 4.0Ah Starter Kit, 12V, Includes M12 XC 4.0Ah Battery Pack, M12 Charger, and Contractor Bag, 2X More Runtime vs. Standard Lithium-Ion, 20% More Power, Operates Cooler and Performs Below 0 Degrees F, REDLINK Intelligence for Overload Protection, Compatible with All M12 Cordless Tools.