On-line 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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General Info

Non-Electric

Carbon

Vacuum Tube

Transistor (Body)

Transistor (Ear)

Miscellaneous

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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

Eveready E340E Hearing Aid Battery

This is an Eveready E340E 1½ volt carbon-zinc battery for body worn transistor hearing aids of the 1950s and early 1960s.

It is equivalent to our "N" size battery today. It weighs about ¼ oz., and is
1 3/16" by 9/16" in diameter.

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