Greenworks, one-battery fits all of our 40V system that includes over 40+ tools to choose from. Our one-battery fits, every tool for every job. Greenworks has you covered. Our Greenworks 40V dual blade/Dual port mower is perfect for yd. up to 1/3 acre with a battery run-time of up to 50 Min. The Greenworks 40V is a Dual blade mower designed to deliver better mulching, cutting & bagging. The dual battery port automatically switches to the backup battery for a longer run-time, making it easier to get the job done. All this without the hassle of gas, cords or maintenance. That’s the power of Greenworks.