he new DeWalt 5.0Ah XR Li-Ion battery packs will deliver 66% more runtime than a standard 3.0Ah battery pack LED State of Charge Indicator helps manage pack charging Lightweight design provides the user with upgraded 5.0Ah Power without increasing the size or weight over the 18v 3.0Ah battery pack No memory effect and virtually no self-discharge for maximum productivity & less downtime Compatible with all DeWalt XR Lithium-Ion 18v Tools Protection against overheat, overload and deep discharge conditions increases battery life