A subcutaneous insertable cardiac monitor (ICM) for use in performing long term electrocardiographic (ECG) monitoring is disclosed. The length of the monitoring performed by the ICM is extended, potentially for a life time of the patient, and the functionality of the ICM is enhanced, including enhancing the rate at which data can be offloaded from the ICM, by including an internal energy harvesting module in the ICM. The energy harvesting module harvests energy from outside the ICM, and provides the harvested energy for powering the circuitry of the ICM, either directly or by recharging a power cell within the ICM. As the circuitry of the ICM requires a low amount of electrical power, the harvested energy can be sufficient to support the functioning of the ICM even when the electrical power stored on the ICM at the time of implantation runs out.
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