Here is a product by Buhl Industries found in schools and offices everywhere:

26 Bay Laptop Recharger and Storage Cart with Timer

- Securely store and charge up to 26 laptops simultaneously

Features and Specifications:

•Designed to store, transport and charge up to 26 laptop computers
•Rugged black powder coated surface and gray laminate top
•Low profile design - very safe and stable
•Removable bay separator allows easy configuration
•Each bay is equipped with a 120-volt receptacle
•Lexan tambour door with padlock hasp
•Flip down back access hatch uses separate keyed lock for secure integration
•Two 8' switched power cords, one for each shelf
•Included timer switches between each group of laptops to prevent circuit overloading
•One Year Warranty
•Ships via truck only on a palette
•37” high, 24” wide, 50 “ long from push handle to push handle