Hugh Hetherington Hearing Aid Museum
Hugh Hetherington Hearing Aid Museum

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!

Home Enter the Museum About Us Contact Us

FREE Subscription to:
Hearing Loss Help
The premier e-zine for people with hearing loss

Your email address
will never be
rented, traded or sold!

Your First Name:
Your E-mail:
Search this site:

 Results per

 all words
 any words

Click on the "General Information" button (top button above) for an overview and general information on this category of hearing aid.


Hearing Aid Batteries

Unknown Carbon Hearing Aid Battery (1)

This unnamed carbon-zinc 3-volt hearing aid battery was used in carbon hearing aids somewhere around 1935. It is very similar to the Gem No. 1A except that the terminals were set ¾" apart, while the Gem 1A terminals were set 1" apart.

This battery weighed 9½ oz, and measured 3½" high by 2⅛" wide by 1" thick.

Click picture for larger view


Back Next

Side/end view of the carbon hearing aid battery. The split down the side is from age.


Click picture for larger view

Top view of this carbon battery showing the battery terminals. Note that like the battery terminals of the Gem No. 1A, instead of being in the center, the terminals were set near the back edge of the battery.

Click picture for larger view


Bottom view of the unnamed carbon hearing aid battery.



Click picture for larger view


(If a larger picture doesn't appear, you may have to turn your pop-up blocker off)