The Greenworks 82V 16" 1.5kW Brushless String Trimmer delivers true intelligent power without sacrificing performance. With 40% more power than a 36cc gas trimmer, the direct drive commercial-grade brushless motor efficiently directs power to the spool for consistent speeds up to 5700 RPM. This 1.5kW unit trims up to 2.5 miles on one 4.0Ah battery and provides continuous runtime with interchangeable batteries.