Powered by a Greenworks 60V UltraPower lithium-ion battery (sold separately) . the Greenworks 60V 18″ Battery Powered Cordless Chainsaw delivers the power and performance of typical gas-powered saws . without the noise . fumes . or harmful emissions. The battery-powered brushless motor delivers 20% more torque and faster cutting than a 40cc gas-powered chainsaw . and it features our No Prime . No Choke . No Pull easy-starting system for fast starts every time . with no aggravating pull cord. The powerful Greenworks 60V UltraPower cordless battery platform gives you all the power you need to tackle all your lawn care projects. Kick gas to the curb this spring and go green with no fumes . no mixing . no maintenance and no pull cords. Let Greenworks help you take the work out of yard work.