This is a genuine DEWALT DCB107 Lithium-Ion battery charger that can charge both 12v and 20v batteries. It is a fast charger that can charge multiple battery capacities including 1.3 Ah, 1.5 Ah, 2.0 Ah, 3.0 Ah, and 4.0 Ah. The charger is designed in the manufacturer's signature yellow color and is backed by a manufacturer warranty. It is compact and lightweight with dimensions of 1.25in x 5.75in x 5.25in and weighs only 0.7lbs. This charger is compatible with a variety of power tools and air tool accessories, making it a versatile option for any workshop or home setting. It comes with the fastest shipping options available.