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 EP675E Mercury Hearing Aid Battery

The Eveready EP675E 1.4 volt mercury battery was manufactured by the Union Carbide Corp of Cleveland, Ohio for behind-the-ear and eyeglass hearing aids from the mid 1950s until mercury batteries were phased out in the USA in 1996 and were replaced by zinc-air batteries which had been available for some years at that point.

This battery weighed around 2 g and measured 0.455" in diameter by 0.210" high.

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Top view of the Eveready EP675E mercury battery.

The top (negative terminal) was gold colored.
 

 

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Bottom view of the Eveready EP675E mercury battery. The bottom and sides comprised the positive terminal of the battery.


 

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The Eveready EP675E mercury batteries were sold in blister paks of 6 batteries each.
 


 

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Unlike most blister paks, you extracted the Eveready EP675E mercury batteries from the front by lifting the plastic tab (shown here in the open position).


 

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Rear view of the Eveready EP675E mercury battery pak.


 

 


 

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