Some customer reviews of Vax Air Cordless Lift U85-ACLG-B A Lift-out Cylinder for Extended Cleaning ReachThe lift-out cylinder detaches from the main body with the click of a button, enabling you to clean floors and above the floor in an easy, fluid motion. LithiumLifeTM Battery PowerTwo LithiumLifeTM batteries deliver up to 60 minutes** of long lasting cleaning power. Each battery takes 3 hours to charge and automatically switches off ensuring they don’t overheat or waste energy once fully charged. WindTunnel3TM TechnologyThe Air Cordless Lift includes WindTunnel3TM Technology. This provides 3 channels of suction across the width of the floor head that delivers edge to edge cleaning. This also helps lift and remove embedded dirt across both carpets and hard floors. Ultra-lightweight when in Use At just 5.1 kg, the Air Cordless Lift upright is ultra-lightweight when in use and easy to carry from room to room or up and down stairs. This makes it easier to clean larger spaces within the home.