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

Sonotone X800 Hearing Aid "A" Battery

This is an Sonotone X800 1½ volt hearing aid "A" battery used in Sonotone vacuum tube hearing aids in the 1940s.

It weighed 4½ oz., and measured 3¾" in height by 1" in diameter.

This battery was paired with a Sonotone 45 volt "B" battery in 2-piece vacuum tube hearing aids.

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This battery is a slightly different version of the above battery. It is  a Sonotone X800-S, but it is the same size and weight as the above X800 battery.

Someone has written on the side the date of Nov. 22, 1945.

 

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Top view of the Sonotone X800-S battery showing the 2-hole socket. Correct polarity was maintained as one hole was larger and the other smaller so you couldn't insert the plug backwards.

 

 

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