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

General EP-129 Carbon Hearing Aid Battery

The General EP-129 was a 4½ volt zinc-carbon hearing aid battery used in carbon hearing aids in the 1930s and early 1940s. It was manufactured by the the General Dry Battery Company of Cleveland, Ohio.

The General EP-129 battery weighed 8¼ oz, and measured 2½" high by 2 15/16" wide by 1" thick.

This particular battery was used in an Acousticon Model C-6 carbon hearing aid that came out in 1937.

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Top view of the General EP-129 carbon hearing aid battery. Note the larger and smaller holes, which ensured that the plug maintained the correct polarity.


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Bottom view of the Ep-129 General  battery showing the date stamp of October 1940.



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