Hearing Aid Battery Testers—General Information
Testers for hearing aid batteries have been around almost
as long as the hearing aids themselves. Since the hearing aid batteries were
often rotated from day to day, it was a good idea to check the voltage before
connecting it to aid.
Many of the hearing aid manufacturers had battery meters
made for them with their own brand name. The early ones for carbon hearing aids
measured up to 4.5 or 6 volts, while the models used for vacuum tube aids were
often dual range voltage testers with one range up to 1.5 Volts for the "A"
battery and up to 45 Volts for the "B" battery. Since the carbon hearing aids
required low voltage batteries, there were a few testers that used only a small
light bulb to test the battery in a similar fashion that we use an LED in some
testers today.
Battery testers are still available today for the small
button cells used in BTE and ITE hearing aids. |
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Example of a Hearing Aid
Battery Tester
Click on the "Miscellaneous"
button (on the left), then on "Hearing Aid Battery Testers" to see the details of this and other
hearing aid battery testers. |
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