Cut 10% faster than gas with constant blade speeds of 17,000 ft/min The Greenworks 60V Tractor features the most advanced power-cutting system in the industry. Where gas mowers bog down, our mowers sense extreme conditions to send optimal power to the blade motors, maintaining a constant blade speed of 17,000 ft/min through tall, thick, and wet grass. Cut all-day with "Mow, Swap, and Go" technique: XL Property Hack: Mow up to 1.75 acres on a single charge with (4) included 8 Ah batteries, or mow all day by using 2 batteries in the mower while the other 2 fully charge. The secret: place one battery only in each Dual Port Turbo Charger, then "Mow, Swap and Go" for virtually endless runtime and coverage. Experience Greenworks' Intelligent Power and gas-free future of lawn care. Sharper, faster, stronger.