A storage and charging station system for mobile electronic devices includes a support tower cage structure having vertically extending rear and side panels. A plurality of planar support shelves engage horizontal slots on the panel front sides and at least one associated rear channel shelf support surface on the rear panel to support a vertical array of mobile electronic devices. The shelves may include side support shelves extending outward through supporting panel slots in a side wall for supporting additional electrical components. Openings are provided in the cage structure panels for observation of mobile electronic devices, for ventilation, and for facilitating transmission of electrical data to and from the mobile devices. Cable management apertures and slots are provided in at least one panel and shelf portions. A lockable door may be attached to secure the contents of the cage structure. A lockable side cover may also be provided.