For the new generation of Active Implantable Medical Devices (AIMDs), technological advancement in electronic and micro and nanofabrication is going in the direction of reduction of size and power consumption, and improvement of therapeutic efficacy and safety. The power supply of implantable devices is still an open challenge. Most AIMDs are powered by a primary battery that takes up much space, and that has to be replaced when running out. Also, one of the main challenges is to ensure proper and sufficient power delivery to the entire device without overheating it. We have developed a Wireless Power Transfer (WPT) link using the Near-field Resonant Inductive Coupling (NRIC) to recharge subcutaneously implanted batteries and to power supply AIMDs without a battery.