The ONEPWR Tower charging stand for the ONEPWR Emerge Stick Vacuums organizes, stores and charges two ONEPWR lithium-ion batteries all in one convenient place, creating a home for clean. Enjoy the flexibility to conveniently charge & store without having to drill holes into walls. The ONEPWR Tower charging stand has dual-charging capabilities that will charge two ONEPWR batteries sequentially, so you always have the power to clean.