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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

This battery was manufactured for the "Great London" carbon hearing aid of the 1920s.

It is typical of the batteries made for the early carbon hearing aids in the 1910s through the 1920s.

This 3 volt battery was composed of two large carbon-zinc dry cells in a black paper wrapping.

It measures 3 5/8” by 2 1/8” by 1” and weighs 7 oz.

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