Keep up to 32 devices secure and fully charged with the ECR4Kids 30-Bay Charging Cart. Ideal for classrooms, universities, offices and libraries, this cart's sturdy steel frame keeps tablets, laptops and netbooks safe. With 32 built-in power outlets, you can ensure all your devices are ready to use at a moment's notice. Bays are lined with a protective padding to keep devices safe, and the side panels are ventilated to prevent devices from overheating. Use the upper storage shelf to store important items or more devices. Take all your devices with you — 4 durable casters (2 locking) for easy transportation. The convenient programmable keypad lock means no more lost keys: just select your custom passcode and start storing your valuable devices. Comes with a rescue power source in case keypad runs out of power. Connect with a 9V-battery to temporarily charge keypad for access. Battery not included. Back panel opens via lock and key (includes 4 keys). Cart includes a side cord-winder and interior wire organization. This item is a secure place to store, charge, and transport tablets but is not a safe that is guaranteed to prevent theft or damaged property. Adult assembly required.