A mobile device (100; 200; 300), comprising: a retaining structure (102; 206; 306; 412) configured to be actuated by a user and having two states, a first state configured to retain a battery (106; 204; 304; 404) of the mobile device (100; 200; 300) and a second state configured to release the battery of the mobile device, at least a portion (104; 208; 308; 414) of the retaining structure (102; 206; 306; 412) being configured to enable light to be emitted therefrom; an electronic signaling user interface including at least one light source (104; 208; 310; 408), the at least a portion (104; 208; 308; 414) of the retaining structure (102; 206; 306; 412) emitting light signals produced by the at least one light source; and a secondary temporary power source, the mobile device characterized in that it comprises a processor in electrical communication with the electronic signaling user interface, and configured to: in response to receiving a request to perform a warm swap procedure: initiate the warm swap procedure to set electronic components to a warm swap mode and to temporarily transition electrical power sourcing from the battery to being from the secondary temporary power source; in response to initiating the warm swap procedure, cause the electronic signaling user interface to emit a first light signal by the at least one light source, thereby indicating to the user to wait before removing the battery; in response to setting the electronic components in the warm swap mode, when the secondary temporary power source has been established, cause the electronic signaling user interface to emit a second light signal by the at least one light source, thereby indicating to the user that the battery (106; 204; 304; 404) of the mobile device can be warm swapped by actuating the retaining structure (102; 206; 306; 412); and in response a charged battery replacing the battery (106; 204; 304; 400), power up the electronic components from the warm swap mode to be in an operational mode. a retaining structure (102; 206; 306; 412) configured to be actuated by a user and having two states, a first state configured to retain a battery (106; 204; 304; 404) of the mobile device (100; 200; 300) and a second state configured to release the battery of the mobile device, at least a portion (104; 208; 308; 414) of the retaining structure (102; 206; 306; 412) being configured to enable light to be emitted therefrom; an electronic signaling user interface including at least one light source (104; 208; 310; 408), the at least a portion (104; 208; 308; 414) of the retaining structure (102; 206; 306; 412) emitting light signals produced by the at least one light source; and a secondary temporary power source, the mobile device characterized in that it comprises a processor in electrical communication with the electronic signaling user interface, and configured to: in response to receiving a request to perform a warm swap procedure: initiate the warm swap procedure to set electronic components to a warm swap mode and to temporarily transition electrical power sourcing from the battery to being from the secondary temporary power source; in response to initiating the warm swap procedure, cause the electronic signaling user interface to emit a first light signal by the at least one light source, thereby indicating to the user to wait before removing the battery; in response to setting the electronic components in the warm swap mode, when the secondary temporary power source has been established, cause the electronic signaling user interface to emit a second light signal by the at least one light source, thereby indicating to the user that the battery (106; 204; 304; 404) of the mobile device can be warm swapped by actuating the retaining structure (102; 206; 306; 412); and in response a charged battery replacing the battery (106; 204; 304; 400), power up the electronic components from the warm swap mode to be in an operational mode. initiate the warm swap procedure to set electronic components to a warm swap mode and to temporarily transition electrical power sourcing from the battery to being from the secondary temporary power source; in response to initiating the warm swap procedure, cause the electronic signaling user interface to emit a first light signal by the at least one light source, thereby indicating to the user to wait before removing the battery; in response to setting the electronic components in the warm swap mode, when the secondary temporary power source has been established, cause the electronic signaling user interface to emit a second light signal by the at least one light source, thereby indicating to the user that the battery (106; 204; 304; 404) of the mobile device can be warm swapped by actuating the retaining structure (102; 206; 306; 412); and in response a charged battery replacing the battery (106; 204; 304; 400), power up the electronic components from the warm swap mode to be in an operational mode.