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

Panasonic No. 5 Zinc-Air Hearing Aid Battery

The Panasonic No. 5 1.4 volt zinc-air hearing aid battery is pictured at the right.

The No. 5 zinc-air hearing aid battery came out by 1995 with the advent of tiny completely-in-the-canal (CIC) hearing aids.

The battery shown here is technically a No. PR5H battery. There were a number of different brands, each with other letters surrounding the number 5 such as the PR521, 5UP, ME5Z, 5A, R5ZA, 5SA, S5A, ZA5 batteries--but these are all really just No. 5 batteries and are interchangeable in hearing aids that use them.

The No. 5 zinc-air battery measured 0.221" in diameter by 0.076" thick.

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The bottom (positive end) of the No. 5 battery. Note the tiny air hole in the center of the battery. A red tab seals this hole keeping the air out until the battery is ready to be used. By doing this, zinc-air batteries have a long shelf life. When the tab is removed, the battery starts "working" and even if you don't use it, in a few weeks it will be dead.
 

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The Panasonic No. 5 zinc-air batteries came 6 to a pack. Notice that No. 5 batteries have red tabs on them, making it easy to identify them.

 

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Top view of the No. 5 zinc-air hearing aid battery showing its size. (Each mark on the ruler is 1/16".)

 

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Relative size of the five sizes of zinc-air hearing aid batteries as seen from the top. From left to right they are battery numbers 5, 10, 312, 13 and 675.

 

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A three-quarter view of the 5 zinc-air hearing aid batteries showing their relative size. From left to right they are battery numbers 5, 10, 312, 13 and 675.

Relative size of the five sizes of zinc-air hearing aid batteries as seen from the top. From left to right they are battery numbers 5, 10, 312, 13 and 675.

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Side view of the 5 zinc-air hearing aid batteries showing their differences in height. From left to right they are battery numbers 5, 10, 312, 13 and 675.

 

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Bottom view of the 5 sizes of zinc-air batteries showing the color-coded tabs that seal the air holes before they are used. From left to right they are battery numbers 5 (red tab), 10 (yellow tab), 312 (brown tab), 13 (orange tab) and 675 (blue tab).

 

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The largest hearing aid battery in the museum  (the Acousticon No. 57)beside the tiny No. 5 battery—the smallest hearing aid battery made.

In case you missed it at first glance, the No. 5 battery is just below the bottom right corner of the big battery.

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Another view of the tiny No. 5 zinc-air battery placed to the left the right battery terminal of the large Acousticon No. 57 carbon hearing aid battery. The No. 5 battery is just a bit bigger than the battery terminal itself!

 


 

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