Upon completing 810 or 812, method 800 continues with 814 where an operational mode of the RFID tag is transitioned from the time slot determining mode to a power recharging mode. In the power recharging mode, a rechargeable power source (e.g., power source 236 of FIG. 2) is recharged using energy (e.g., RF energy) harvested by an energy harvesting circuit (e.g., energy harvesting circuit 232 of FIG. 2) of the RFID tag. As should be understood, processing elements (e.g., a communication enabled device 204 of FIG. 2) of the tag is in a low power state during the power recharging mode. In the low power state, the processing elements are at least partially functional (e.g., clock/timer 214 of FIG. 2 is operating). Notably, at least the RFID tag's communications circuit (e.g., communications circuit 206 of FIG. 2) is disabled in the power recharging mode. Other functions/operations of the RFID tag may also be disabled in this mode for power conservation purposes.