BLACK+DECKER LSW36 Lithium Sweeper, 40-Volt Powerful 40-volt lithium ion rechargeable battery delivers the power with long run-time to complete the toughest jobs Power Command controls speed for maximum run-time or maximum power. Maximum initial battery voltage (measured without a workload) is 40V. Nominal voltage is 36 Ideal for blowing debris from hard surfaces like patios, decks, walkways, driveways and garages Blow tube with built-in scraper allows users to loosen matted leaves and stuck-on debris Soft grip handle; lightweight at just 4.7 pounds