Vintage Hearing Aid Batteries – Shown in Use

Previous posts have talked about early vacuum tube and transistor hearing aids, and the hearing aid batteries they used.  A tremendous change occurred in hearing aid size in going from vacuum tubes to transistors as amplifiers.  Much of that related to changes in the battery size as well, as previously discussed. This post is intended…

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Vintage Hearing Aid Batteries

In researching vintage hearing aid batteries, occasional references are made to the power supplies (batteries) used.  However, for most individuals, never having been exposed to out-of-date hearing aids, there is little reason to expect to know what some of the sizes and types were. This post will review some of the commonly-used batteries and cells…

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