Ryobi continues to innovate and redefine the cordless lawn mower with the 20 in. This self-propelled mower features Rear Wheel Drive providing more traction for powering up hills, as well as making it easier to mow in straight lines. This mower also includes convenient, easy to use features that make it the perfect option for any user. With its easy start and 7-position single height adjustment, start mowing in seconds without the hassle of gas and oil. Adjustable telescopic handles allow you to set the perfect height for you to maximize comfort and reduce fatigue. This mower has quick released knobs and is designed to be stored vertically for easy and compact storage. This mower is equipped with a 5.0Ah 40-Volt Lithium Ion high capacity battery for extended runtime. The included battery and charger are compatible with any of the Ryobi 40-Volt tools.