DMD Deluxe Mobile Charging and Storage Cart - Stores up to 30 Devices - Multiple iPad, Tablet, Laptop and Notebook Charging Station/Security Cabinet - Locking Cabinet with Set of Two Keys Now you can store and charge up to 30 iPads, tablets and other 1 inch thick Tablet Devices in one mobile charging cart. Perfect for school systems! Never worry about your devices overheating. The cart is built with proper ventilation so air can circulate through the unit. Devices are safe and secure in the locking cabinet that comes with a set of two keys. Rubber coated dividers keep your tablets organized and protected - 1 inch spaces between dividers Included is two 16-Outlet vertical electrical outlets for maximized space.