Long range RFID device for battery monitoring and systems implementing same

A Radio Frequency Identification (RFID) system, comprising:

• an electronic device being powered by a battery;
• an RFID device, external to the electronic device, and in electrical communication with the electronic device;
• and
• a mechanism for estimating a remaining potential energy of the battery, wherein a flag is set on the RFID device when an estimated remaining potential energy of the battery is below a predefined threshold, the RFID device being configured to send an indication to a remote device, upon receiving a query from the remote device, of whether the flag is set or not set,
• wherein the RFID device includes circuitry for monitoring usage of the battery, the RFID device being configured to store and output, in addition to the indication of whether the flag is set or not, an estimated life remaining in the battery and an indication of actual battery usage:
• wherein a remote device queries the RFID device to determine whether the flag is set, the RFID device being configured to send the indication of whether the flag is set to the remote device via an air interface, the indication only indicating whether the flag is set or not set;
• wherein the electronic device includes at least one of a visual display device and a sensor.