The RYOBI 40V HP Brushless 20" Push Mower delivers more power than a 150cc gas mower, making it a true gas replacement. A 40V 6Ah battery gives you up to 50 minutes of runtime for easily tackling up to 1/2 acre (battery not included). 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. The single-point height adjustment allows you to easily select the perfect height for your lawn. When the job is done, the handles easily collapse for compact, vertical storage. Best of all, it is part of the RYOBI 40V system where any 40V battery works with any 40V product. This mower is backed by the RYOBI 5-Year Manufacturer's Tool Warranty and includes 40V Brushless 20" Push Mower, Grass Catcher Bag, Start Key, Side Discharge Chute, Wrench, and Operator’s Manual. Battery and charger sold separately.