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

Zenith No. Z-1M Hearing Aid "A" Battery

The Zenith Z-1M 1½ volt hearing aid "A" battery was made by the Zenith Radio Corporation of Chicago, IL for use in the Zenith "75" Radionic  vacuum tube hearing aid which it began manufacturing in 1947.

The Zenith Z-1M battery weighed 1.9 oz., and measured 2½" high by 1¼" wide by 11/16" thick.

This battery was paired with a 30 volt "B" battery, such as the Eveready 413E in the Zenith "75" Radionic vacuum tube hearing aid.

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Front view of the Zenith Z-1M "A" battery showing the name, model and voltage of this battery.

 

 

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Rear view of the Zenith Z-1M "A" battery. The inscription on the top half reads, "This Hearing Aid Battery designed for the Zenith "75" Radionic Hearing Aid."

Below that is presumably the lot number "M51".

 

 

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Top view of the Zenith Z-1M "A" battery showing the unusually-shaped positive terminal.

 

 

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Bottom end view of the Zenith Z-1M "A" battery showing the negative terminal.

 

 

 

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