As mentioned, the brushless motor gives extra performance and power, but it also has the advantage that it is practically maintenance-free, and gives much longer runtime per battery pack. The battery included with this kit is the DCB547, which is an XR FlexVolt pack that has a capacity of 9.0 Amp-hours. You can use this battery with any other 54V or 18V XR power tool, or use any other 54V XR battery with this hedge trimmer. To charge the battery up, DeWalt includes a DCB118 fast charger that is also capable of charging 18V XR batteries.
Related Product: DCMHT573N 54V FlexVolt 65cm Hedge Trimmer (Bare Unit)