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

Fortiphone No. 3-S Hearing Aid Battery

The Fortiphone No. 3-S was a 4.5-volt hearing aid battery used in carbon hearing aids in the late 1920s and the 1930s.

The Fortiphone No. 3-S carbon-zinc battery weighed 6 oz, and measured 3" high by 2½" wide by ¾" thick.

The label says it was "manufactured by Siemens Brothers & Co. Ltd (London, England)...specially for Fortiphone Limited (London).

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Top view of the Fortiphone No. 3-S battery showing the battery terminals


 

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The battery terminals of the Fortiphone No. 3-S were near the top center of the battery.

 


 

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