Implantable telemetry systems provide chronic measurements of physiological parameters such as the electrocardiogram and blood pressure from research animals. Device operation is typically limited by battery life which also determines device size. We present a system for powering implanted telemetry devices for use in mice which provides lifetime monitoring. It uses coils under the home cage of the animal to generate a magnetic field capable of supplying power continuously to a telemetry system implanted inside the mouse. A guaranteed minimum power of 20mW is provided over a 100mm × 100mm area independent of mouse orientation which facilitates high bandwidth (2kHz sample rate) continuous physiological data.
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