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 504E Hearing Aid "B" Battery

This Eveready 15 volt Mini-Max hearing aid "B" battery was used mainly in the larger 1-piece vacuum tube hearing aids in the late 1940s and early 1950s.

Pictures of both an earlier version and a later version are shown here. Pictured at the right is the later version from the early 1950s.

It weighed 0.3 oz. (9 g), and measured 1 3/8" by 5/8" by 5/8" (3.4 x 1.5 x 1.5 cm).

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Front view of the earlier version of the Eveready 504E battery from the late 1940s.


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Side view of the later version of the Eveready 504E battery showing the polarity arrow.


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Top view of the later version of the Eveready 504E battery with red color-coding for the positive terminal


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Bottom view of the later version of the Eveready 504E battery with blue color-coding for the negative terminal.

 


 

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