In an access control system, a method and system for power management. A method of power management in a wireless access control system includes monitoring usage of a transceiver in a remote access point in a wireless access control system, de-activating the transceiver when the transceiver is not in use, and re-activating the transceiver upon occurrence of a predefined event. Additionally, the method may include transmitting a warning signal when an energy level of a power supply associated with the transceiver is below a predetermined threshold. The method may further include locking the remote access point when an energy level of a power supply associated with the transceiver is below a predetermined threshold. The remote access point may be locked until the energy level is above the predetermined threshold.