The RYOBI 40V HP Brushless 20" Self-Propelled Multi-Blade Mower delivers more power than a 150cc gas mower, making it a true gas replacement. The included 40V 8Ah battery provides up to 55 minutes of runtime on a single charge, ideal for up to 1/2 acre. RYOBI 40V HP Technology utilizes a brushless motor & advanced electronics that automatically react to mowing conditions by increasing the blade speed to eliminate bogging down & powering through the toughest cut. Get superior 3-in-1 performance with the CROSS CUT Multi-Blade System for less clumping, better side discharge, and fuller bagging with fewer changes. Rear-wheel self-propel drive delivers smooth, effortless mowing. The single-point height adjustment makes it easy to choose the ideal cut. Handles fold for compact, vertical storage. Part of the RYOBI 40V system, it works with any 40V battery. Backed by a 5-year tool and 3-year battery warranty, it includes a 40V Brushless 20" Self-Propelled Multi-Blade Mower, 8Ah battery, rapid charger, grass bag, start key, side discharge chute, wrench, and manuals. Additionally, complete your setup with the RYOBI 20"-21" Lawn Mower Striper to create clean, professional-looking stripes and patterns as you mow. It installs and removes quickly, works with or without a bagger, and can be filled with sand or water (up to 25 lbs.) for more defined lines.