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

Eveready E450E Mercury Hearing Aid Battery

This is an Eveready E450E 1.4 volt mercury battery for body worn transistor hearing aids of the mid-1950s.

It weighed about ¼ oz., and measured
9/16" high by 7/16" in diameter.

Mercury batteries are no longer sold today because of the large quantities of mercury in them and the consequent environmental concerns.

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Top view of the Eveready E450E mercury battery.

The Eveready E450E was equivalent to the Mallory RM-450H battery.
 

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Bottom view of the Eveready E450E mercury battery.


 

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The Eveready E450E mercury batteries came 4 to a box.


 

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Top view of the Eveready E450E mercury battery showing its size. (Each mark on the ruler is 1/16".)

 


 

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