DEWALT DCBL590X2 40V Max Lithium Ion Backpack Blower Part of the 40V MAX system of tools Brushless motor with (2) 40V 7.5Ah batteries Full variable speed trigger with a speed lock Second battery well for additional battery and extended runtime Compliant with noise-restricted areas at only 63 dB(A) *Maximum initial battery voltage (measured without a workload) is 40 volts. Nominal voltage is 36