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 No. 600 Hearing Aid Battery

This is an Sonotone No. 600 2.8 volt mercury hearing aid battery used in the Sonotone Model 200 transistor body hearing aids that came out in 1956.

It weighed 1⅛ oz., and measured 1¼" in height by 1" wide x ½" thick.

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Side view of the Sonotone No. 600 battery showing the model number. The Sonotone No. 600 was equivalent to Eveready's No. E122E and Duracell's No. TR122H batteries.

 

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Top view of the Sonotone No. 600 battery showing the double cell arrangement. The positive terminal is the rectangular pad and the negative terminal is the round one (top).

 

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Bottom view of the Sonotone No. 600 mercury battery showing the single positive terminal on the bottom of one cell. With this arrangement, the battery could provide both 1.4 volts and 2.8 volts at the same time.

 

 

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