It does charge. However, I do not have a Craftsman tool to see how long it holds a charge. The 1997 Craftsman Industrial Fast Charger is a reliable power tool accessory designed for charging 12.0V, 13.2V, and 14.4V batteries. This single bay charger from Craftsman features a sleek black design and is compact in size, with dimensions of 7 inches in length, 4 inches in width, and 3.2 inches in height. The charger is capable of charging one battery at a time and weighs 4.5 pounds, making it easy to handle and transport. With its efficient charging capability and durable construction, this Craftsman charger is an essential tool for any workshop or job site.