Our 20V MAX* Cordless Resin Blade String Trimmer features an adjustable height handle for comfortable control and a Powerboost™ 2-speed control to boost power or extend run time. * Maximum initial battery voltage (measured without a workload) is 20 volts. Nominal voltage is 18 #BLACKANDDECKER #BLACKANDDECKERLawnCareTips #LawnCare