Battery substitute device

摘要

A battery substitute device (9) for use with apparatus for testing a hearing aid instrument (12) of the ear-worn type which has a battery compartment with a door for access thereto and hearing aid contact terminals located in the battery compartment at a spacing from one another which is suited for engagement with the battery electrodes. The battery substitute device comprises a flexible electrical cable (10) which includes a pair of electrical conductors (18) and a first connector (15-17) at one end for electrically coupling to a source of d.c. power (13). A second connector provided at the opposite end of the cable (10) comprises a pair of resilient plate contact members (21, 22) in laterally spaced parallel array, each of which is electrically connected to a different one of the cable conductors (18) with a first end portion (23) of each plate contact member being encapsulated in a molded pod (31) and the spacing between said plate contact members being slightly less than the thickness of the battery and the thickness of the battery compartment door whereby when the hearing aid battery is removed from the battery compartment, the plate contact members of the second connector may be placed in straddling position around the battery compartment door to cause their outward divergence and then flexed towards one another and inserted into the battery compartment by closing the battery compartment door to thereby make electrical contact with the contact terminals of the hearing aid.