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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

The Ardente No. 99 hearing aid battery was sold by R. H. Dent of London during the 1920s and 1930s.

It measured 2¾" high x 2½" wide by ¾" thick, and weighed 5¾ oz. It is a 3-cell 4½ volt carbon-zinc battery.

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