More Runtime. Better Performance. The V20 brushless RP String Trimmer gives you the power and performance to get the job done. The 5.0ah battery and brushless motor give you up to 80 percent more runtime and up to 75 minutes of runtime. Fine tune your applications with an adjustable swath size allowing you to adjust from 11-in to 13-in The compact design and lightweight feature, up to 82 percent lighter than gas is designed for ease of use and maneuverability. The string trimmer also has a feature called Weatherguard Technology which is designed to help protect the tool from moisture and dust. Applies to tool only, does not apply to battery or charger. The V20 battery platform is compatible with CRAFTSMAN V20 Outdoor Equipment and Power Tools. You'll find the complete line of outdoor tools and equipment essentials for a job to make you proud.