The Greenworks 40V 20? Brushless Push Lawn Mower which comes with a 4.0 Ah Battery and Quick Charger makes lawn care easy and efficient. Its powerful brushless motor runs quietly and lasts longer. The strong steel 20? cutting deck and SmartCut? technology ensure great cutting performance. This mower offers 13 options including rear bagging mulching and side discharge for managing grass clippings. The simple push-button start makes it easy to use. When one battery runs out it automatically switches to the second battery so you can keep mowing without stopping. Compatible with the Greenworks 40V Li-Ion system this mower works with other tools for more efficient yard work. Enjoy easier lawn care with the Greenworks 40V Brushless Push Lawn Mower.