Although not core to the primary function of medical devices (implantable or on-the-body), the battery tends to dominate device size and shape. It could also dictate the energy budget and hence the device functionalities, and limiting its lifetime. Yet, with trends towards device miniaturization, increasing connectivity and longer life expectancy, tough requirements are placed on the energy storage component to provide the device with true power autonomy. Topics covered include:
• Alternative technologies available for powering sensing and therapy delivery medical devices.
• Advantages in selecting battery technology depending on electrical performance, size and energy density, cycle life, safety and cost.
• Solutions for charging batteries wirelessly or by using energy harvesting.