Unique carts feature built-in traction-drive system for easy transportability. Ideal for applications including mail rooms, hospitals, supermarkets, hotels and warehouses. Features 500W electric drive motor with two 70Ah batteries for power. 110V AC internal battery charger is included along with battery level indicator. Variable throttle speed control for precise maneuvering and positioning is located in the handle. Units roll smoothly on (2) 9" x 3-1/4" solid foam rubber steering wheels and (2) 10" x 3-1/4" solid foam drive wheels. Walking speed is 0-2.8 mph when unloaded and 0-1.5 mph when loaded. Speed control is conveniently located in handle. Handle pivots back towards operator and includes horn and emergency stop. Maximum incline is 7 degrees. Each shelf includes a tread plate surface. Deck height 14"