Greenworks model 24322 features a Brushless motor which provides a more efficient motor operation for a longer lasting tool. Variable-speed 185 MPH motor cleans multiple surfaces with ease. Provides up to 30% more torque with up to 70% less vibration or more power and comfort. All electric operation eliminates gas hassle and fumes for a cleaner running tool. Low maintenance brushless motor is easy to manage and provides long lasting power. Powerful G-MAX battery system offers enhanced run times and power over the standard lithium-ion battery solution. Note: 40V G-MAX and 40V Lithium-Ion Batteries are not cross compatible.