The Roomba i7 robot vacuum uses a premium 3 Stage Cleaning System with Dual Multi Surface Rubber Brushes and 10X suction to clean different floor surfaces throughout your home. Roomba i7 learns, maps and adapts to each room, using Imprint Smart Mapping technology, letting you control which rooms are cleaned and when. Cleaning power is always at your fingertips with the iRobot HOME App you can control when, where, and how your robot cleans all from your smart phone. Battery Type Lithium Ion.Empties on its own - you don’t have to think about vacuuming for weeks at a time. Clean Base Automatic Dirt Disposal holds 30 bins of dirt, dust and hair.