Visit the interactive landing page to learn more about this mower. RYOBI redefines power and convenience with the 40-Volt 21 in. Self-Propelled Cordless Lawn Mower. Combining 40-Volts of lithium power with advanced brushless technology this mower delivers GAS-LIKE POWER, surrendering nothing but gas. Featuring self-propelled technology and rear wheel drive, this mower increases your traction making it easier to maneuver and almost effortless to use. The high capacity 7.5 Ah battery delivers maximum run-time and instant power at the push of a button. The 21 in. durable steel deck features a 7-position single point height adjustment so you can select your ideal cutting height. The 3-in-1 capability allows you to choose between mulching, bagging, and side discharging your grass. When the job is done simply lift the single motion lock-and-release bagger to empty your grass and place it back down with ease. The collapsible telescoping handles fold down easily when the job is done making it ideal for compact spaces. This mower and the included battery are compatible with all RYOBI 40-Volt tools, batteries and chargers. Backed by a 5-Year Limited Tool Warranty and a 3-Year Limited Battery Warranty.