Wireless charging locking device

A system for wirelessly transmitting power between a mobile device and a locking device, the system comprising:

• a locking device comprising:
• a wireless power coil configured to receive power;
• an authentication module configured to receive and authenticate an access credential, the authentication module operatively connected to a lock actuator, the lock actuator configured to lock or unlock a mechanical or electronic lock when the access credential is authenticated;
• and
• at least one battery configured to supply power to at least the lock actuator, the at least one battery comprising a storage of power, the at least one battery configured to store at least a portion of power received by the wireless power coil;
• a mobile device comprising:
• a wireless power coil configured to wirelessly transmit power to the wireless power coil of the locking device;
• a communication module configured to transmit the access credential to the authentication module of the locking device;
• and
• at least one battery configured to supply power to at least the wireless power coil, at least a portion of the power transferred from the mobile device to the locking device being from the at least one battery;
• wherein the power is wirelessly transmitted from the mobile device to the locking device when the storage of power is below a critical level.