An ear-worn electronic monitoring system includes an on-ear component comprising a housing configured for placement on, in or about the wearer's ear. The on-ear component comprises a power source and a first interface coupled to the power source. The monitoring system also includes an in-ear component comprising a housing configured for deployment at least partially within an ear canal of the wearer. The in-ear component comprises a second interface configured to couple to and decouple from the first interface, a controller coupled to a memory, one or more physiologic sensors coupled to the controller and memory, and power management circuitry coupled to the controller. The power management circuitry comprises a wireless power receiver configured to receive power from a wireless powering arrangement. The power management circuitry is further configured to receive power from the power source of the on-ear component when the second interface is coupled to the first interface.