The Putnam 16 Charging Station by PC Locs can charge, store and secure up to 16 iPad. 

Main benefits: Charge and lock - Ideal for Schools, Hospitals, Education Centres, and Universities  

Features:

• Simultaneously charge up to 16 iPads
• Pre-wired with 16 MFi approved lightning cables
• Color-coded, external charging status displays
• Integrated mechanical combination lock
• Wall mountable (kit sold separately) and stackable 
• Fully welded steel construction
• Warranty Lifetime by PC Locs 
• See brochure for more technical details