Charges XR Li-Ion DEWALT 10.8V, 14.4V, 18V Slide Pack batteries. Charges 1.5Ah battery pack in 30 minutes. DEWALT 2 stage charging system. Diagnostics with bright LED indicator communicates battery charge status: charged, charging, power problem, and battery too hot or too cold. Intelligent Charger varies charge rate according to battery type to increase battery pack life.