Hugh Hetherington Hearing Aid Museum
Hugh Hetherington Hearing Aid Museum

The Hearing Aid Museum

Hearing Aids of all types—Ear Trumpets, Carbon Hearing Aids, Vacuum Tube Hearing Aids, Transistor Hearing Aids, Body Hearing Aids, Eyeglass Hearing Aids and much more!

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Hearing Aid Batteries

Ardente No. 99 Hearing Aid Battery

The Ardente No. 99 hearing aid battery was sold by R. H. Dent of London during the 1920s and 1930s.

 It measured 2¾" high x 2½" wide by ¾" thick, and weighed 5¾ oz. It is a 3-cell 4½ volt carbon-zinc battery.






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