Enter the 18V ONE+ System with the RYOBI 18V ONE+ HP Brushless 16" Push Lawn Mower, the perfect solution for yards up to 1/3 acre. With (2) included 18V ONE+ 4Ah batteries, this powerful mower provides up to 40 minutes of runtime to get the job done. ONE+ HP technology combines a brushless motor, advanced electronics, and high-performance lithium batteries to automatically react to mowing conditions by increasing the blade speed to eliminate bogging down. Experience exceptional performance with just the push of a button, without the hassle of gas or cords. The single-point height adjustment allows you to quickly select the perfect height for your lawn with 7 different positions (1.5"-4"), while the folding handles make for compact, vertical storage. Easily switch from bagging to mulching with the included mulch plug and enjoy the durable composite deck that is lightweight and resists corrosion. Best of all, it is part of the RYOBI 18V ONE+ system where any 18V ONE+ battery works with any 18V ONE+ product. This 18V ONE+ HP Brushless 16" Push Lawn Mower is backed by the RYOBI 3-Year Manufacturer's Warranty and includes the P1109 18V ONE+ HP Brushless 16" Lawn Mower, PBP005 (2) 18V ONE+ 4Ah Lithium Batteries, P117 18V ONE+ Quick Charger, Grass Catcher Bag, Mulch Plug, Start Key, and Operator’s Manuals.