Greenworks 40V 21″ Brushless (Smart Pace) Self-Propelled Lawn Mower, 2 x 4Ah USB (Power Bank) Batteries and Charger Included MO40L4413

CORDLESS LAWN MOWER – Get more done, faster, with Greenworks electric lawn mowers. This 40V self-propelled lawn mower provides to 70 minutes of run-time on (2) fully charged 4.0Ah batteries (varies based on grass condition and operator technique)
DURABLE 21” STEEL DECK – The 21” steel deck allows you to handle large areas of grass quickly and easily. Brushless motor provides more torque, quiet operation, and a longer life.
SMART PACE – The smart pace self-propelled system automatically & smoothly adjusts to your walking speed. Dual battery ports with automatic switchover for longer, uninterrupted run-times. When one battery depletes, it auto switches to the second battery.