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

Duracell No. 10 Zinc-Air Hearing Aid Battery

The Duracell No. 10 1.4 volt zinc-air hearing aid battery is pictured at the right.

The No. 10 hearing aid battery came out by 1987 with the advent of ever smaller behind-the-ear (BTE) and in-the-ear (ITE) and completely-in-the-canal (CIC) hearing aids.

No. 10 batteries were always zinc-air batteries, as zinc-air batteries began replacing existing mercury batteries in the late 1970s and early 1980s. Mercury batteries are no longer sold today because of the mercury in them and the consequent environmental concerns.

The No. 10 zinc-air battery measured 0.225" in diameter by 0.137" thick.

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The bottom (positive end) of the No. 10 battery. Note the tiny air hole in the center of the "+". A yellow 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 Duracell zinc-air batteries typically came either 4 or 8 batteries to a pack. This is an 8-pack. Notice that No. 10 batteries have yellow tabs on them, making it easy to identify them.

 

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Top view of the No. 10 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.

 

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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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