The high-capacity DEWALT 18V XR 8 Ah battery is designed to support users' growing demands for uptime. Compared to the traditional DCB184 5 Ah battery, this tabless battery offers up to +60% longer run time. The cylindrical tabless cell design increases power, performance and battery life, so you can be confident that your battery will last and perform even the most demanding tasks. Plus, this battery charges quickly. The 16-amp fast charge significantly reduces charging time, so you can get back to work quickly without long waits. Improved thermal characteristics ensure lower cell resistance, which extends operating time, improves performance and lowers operating temperature. This means you can use your tools longer and more efficiently without the risk of overheating. In addition, the rubber coating on this battery protects it from impact and improves its durability. It also provides a premium feel, so you can work in comfort and control.