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.

Hearing Aid Batteries

Ministry of Health OL-345 Hearing Aid "A" Battery

This is a Ministry of Health (United Kingdom) 1½ volt "A" battery that was provided to the users of Medresco (Medical Research Council) vacuum tube hearing aids in the 1950s.

The batteries issued by the Ministry of Health were manufactured by the Eveready Co. (G.B.) Ltd. This battery weighed 3¾ oz., and measured 3¾" in height by 1¼" in diameter.

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This battery sometimes was paired with the OL-240 "B" battery (left).

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