A system for securely storing and charging a mobile device includes an AC-connectable device, such as a multi-function printer or photocopier, having a charging area and a power source, wherein a mobile device such as a smartphone, a tablet computer, an e-reader or a portable rechargeable battery pack, is charged by placing the mobile device in the charging area and attaching the device to the power source. The charging area allows for the mobile device to be secured to or within the AC-connectable device. The charging area can be configured in many ways, including as a movable locking compartment, a fixed locking compartment or a rotatable locking compartment. The mobile device may also be used to power the AC-connectable device when it is not connected to an AC power source. The system also optionally provides for cleaning, sanitizing or drying of the mobile device while it is in the charging area.