The RYOBI 40V HP Brushless 21" Self-Propelled Mower delivers superior power compared to a 163cc gas mower, making it an excellent gas-free alternative. Equipped with dual active battery ports and two 40V 6Ah lithium batteries, it offers up to 70 minutes of runtime, ideal for mowing up to 3/4 acre. Its brushless motor and advanced electronics automatically adjust blade speed to handle tough grass and prevent bogging. The self-propelled rear-wheel drive ensures a smooth, effortless mowing experience, while the 21" polypropylene deck is both lightweight and corrosion-resistant, with a lifetime warranty. For compact storage, the handles fold down, allowing vertical storage. As part of the RYOBI 40V system, it is compatible with any 40V battery and includes the RY401014 Mower, two OP40605 40V 6Ah Lithium Batteries, an OP406 40V Rapid Charger, a Grass Catcher Bag, a Start Key, a Mulch Plug, a Side Discharge Chute, and Operator's Manuals, all covered by a 5-Year Tool Warranty and a 3-Year Battery Warranty. Complement your mower with the RYOBI 20" - 21" Lawn Mower Striper, which creates clean, professional stripes and patterns. It easily attaches to RYOBI 20" and 21" mowers, offering maneuverability and the option to use with or without a bagger. The included funnel lets you add up to 25 lbs. of sand or water for more defined lines. Compatible with models such as P11100/P11010, RY401110/RY401011, and others, it comes with the Lawn Mower Striper, Funnel, and Operator's Manual.