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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