This application includes systems and techniques relating to wirelessly rechargeable medical apparatus, such as a wirelessly powered medical device including: a wireless energy harvesting module configured to receive at least one type of wireless power; a power management module configured to manage and monitor power harvested by the wireless energy harvesting module; a sensing or stimulation module configured to provide sensing data or a treatment operation; and a control module configured to communicate with the power management module and with the sensing or stimulation module; wherein the power management module and the control module are configured to communicate with each other to modify an interrelation of operations of the wireless energy harvesting module and the sensing or stimulation module, including to compensate for influences of wireless power harvesting on operation of the sensing module or on the treatment operation provided by the stimulation module.