Enter the 40V System with the RYOBI 40V HP Brushless 20" Push Lawn Mower. With 40V HP technology, this mower delivers more power than a 150cc gas mower, while the included 40V 6Ah lithium battery provides up to 48 minutes of runtime, making it ideal for up to 1/2 acre. 40V HP technology combines a brushless motor, advanced electronics, and lithium batteries that automatically react to mowing conditions, increasing the blade speed to eliminate bogging down and power through the toughest cut. The single-point height adjustment allows for quick selection of the perfect height for your lawn, while the ONE TOUCH folding handles make for easy storage even in tight spaces. Experience gas performance with just the push of a button. Best of all, it is part of the RYOBI 40V system where any 40V battery works with any 40V product. This mower is backed by the RYOBI 5-Year Manufacturer's Tool Warranty, 3-Year Manufacturer’s Battery Warranty, and includes the RY401017 40V HP Brushless 20" Push Mower, Grass Catcher Bag, Start Key, Mulch Plug, Side Discharge Chute, and Operator's Manuals.