DeWalt DeWalt DCB182 XJ 4 0Ah 18V XR Li Ion Battery
This 18V 4.0Ah Lithium Ion battery from DeWalt is compatible with all DeWalt 18V XR power tools, so it is very versatile. Providing optimum power and boasting an impressive extended running time, this 4.0Ah battery suffers no memory effects and virtually no discharging when not in use, so it is always ready to provide you with the power you need, when you need it.