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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Click on the "General Information" button (top button above) for an overview and general information on this category of hearing aid.


Hearing Aid Batteries

Acousticon 57 Hearing Aid Battery

This is an Acousticon 57 "Double Duty" battery that was used in some Acousticon carbon hearing aids."

Most carbon hearing aids used either 3 or 4˝ volts batteries—but this one has 4 cells. Therefore, the question is what they meant by "double duty". Either it was wired in series for 6 volts , or in series-parallel for 3 volts with double the capacity.

It weighed 1 pound, 1 oz., and measured 4" by 1" by 3⅞" high.

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The top view of the Acousticon 57 battery showing the pin arrangement.



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