The dewalt dcb184 18v 5ah xr li ion battery will deliver a distinctly impressive 66 percent longer runtime than a normalstandard 30ah battery pack this means you can complete jobs quicker and more easily thanks to less time spent charging or changing batteries the dcb184 has an led state of charge indicator so you can manage your charging quickly and easily it is lightweight and its design gives you an upgraded 5ah while not compromising on size or weight this battery has no memory effect