GreenWorks GMAX 40V System offers a wide range of easy to use tools for the homeowner and those who just want more power. This 12-inch cordless string trimmer features an front mount motor for optimum balance. Light weight and easier to use, it has a variable speed trigger for power on demand, 12-inch cut path, .065 line diameter auto feed head for easy line advancement. Designed for ease of use and comfortable operation without the hassle of gas. The 40v Axial Blower features a variable speed trigger and cruise control for optimized control. With 110 MPH and 390 CFM, blowing leaves has never been so easy. Compatible batteries currently include a 2ah (model 29462) and 4ah (model 29472) battery and charger (model 29482). The 2ah battery charges within 1 Hr. so you can get back to work and finish that job. The 4ah battery charges within 2 hours.