With its auto-spool feed, featuring POWERDRIVE, and 33% more run time, you'll be able to tackle tough overgrowth and heavy weeds with the Black+Decker™ 20-Volt MAX* POWERCONNECT™ Cordless String Trimmer and Edger. Quiet and easy to start, this combo tool is lightweight and a breeze to use. With the trusted name of Black+Decker™ backing it up, this trimmer and edger combo will help you complete your yard work in a cinch. Please note the maximum initial battery voltage (measured without a workload) is 20 volts. Nominal voltage is 18 volts..