RYOBI redefines power and convenience with the 40V HP Brushless 21" Self-Propelled Cordless Lawn Mower. The premium HP brushless motor provides more power, longer runtime, and a longer motor life. It starts with just a push of a button, and with the self-propelled rear wheel drive, this mower increases your traction making it easier to maneuver and almost effortless to use. This mower is ideal for yards up to 3/4 acre, featuring dual active battery ports and two 40V 6Ah batteries that provide up to 70-minutes of runtime. The 21" durable polypropylene deck is lightweight, resists corrosion, and is covered by a lifetime warranty. The mower has a 10" high wheel design and the deck features 7 position single point height adjustment to easily select your grass height between 1.5" and 4". With the 3-in-1 mowing functions you can choose between bagging, mulching, or side discharge functions. The easy lift single motion bag removal allows you to quickly and easily empty the grass catcher bag and get back to work. When the job is done, the one touch aluminum handles fold for compact, vertical storage. This mower includes a 40V rapid charger, which charges your RYOBI 40V batteries 4X faster than the standard charger. This mower is proudly made in the USA with global materials and is backed by a 5-Year Tool Warranty.