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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. |
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Hearing Aid Battery Testers |
Acousticon Battery Tester
This Acousticon battery tester was designed to test the 3 volt and 4˝
volt batteries commonly used in carbon hearing aids made in the 1920s
and 1930s.
The pin on the right moved to allow it to plug into batteries that
had different pin spacings.
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Click picture for larger view |
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Rear view of the Acousticon battery tester showing the adjustable pin
(left). To use this meter, you either plugged the pins into the batter
sockets if it had them, or touched the pins to the battery pins if that
was what it had.
This meter could be used to test batteries such as the
Acousticon No. 57
battery with its widely-spaced pins for example.
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Click picture for larger view |
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Close up of the Acousticon battery tester meter showing the markings for
good 3 volt batteries (green) and good 4˝ volt batteries (black).
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Click picture for larger view |
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(If a larger picture doesn't appear, you may have to
turn your pop-up blocker off)
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