Abstract: A hearing device system includes a hearing device having a normally open (i.e., doorless) receptacle cavity configured to accept a battery assembly for powering the hearing device. The battery assembly has an insertable segment and protruding segment, the protruding segment remains outside of the receptacle cavity of the hearing device when the insertable segment of the battery assembly is operably seated (i.e., firmly engaged, with electrical connection established to the hearing device) within the receptacle cavity. A battery dispenser holds one or more new battery assemblies for direct transfer of one of the held battery assemblies into the receptacle cavity of the hearing device to replace a depleted battery assembly when the latter is removed from the receptacle cavity.