With a DEWALT battery and battery charger set, you can charge your battery and get started right away. Some sets include 2 batteries, so you can work without interruptions. While you charge one battery, you can use the other. Thanks to the high 5.0Ah battery capacity, you can work for a long time on 1 charge. The batteries and chargers are part of the DEWALT XR 18V battery platform. That's useful, because you can use the batteries on all your DEWALT (garden) tools from the same platform.