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!

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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

Habafa Voltax No. 710 Hearing Aid "B" Battery

The Habafa Voltax No. 710 Hearing Aid "B" Battery was made by Habafa Voltax of Germany somewhere around 1950. It was used as the "B" battery in some vacuum tube hearing aids of the time.

This 22˝ volt battery weighed 0.9 oz. (26 g) and measured 1 15/16" high by 1" wide by 9/16" deep (5.0 x 2.5 x 1.4 cm).

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Front view of the Habafa Voltax No. 710 Hearing Aid "B" Battery.

 

 

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Rear view of the Habafa Voltax No. 710 Hearing Aid "B" Battery showing the positive terminal (top) and voltage (22˝ volts).

 

 

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Left side view of the Habafa Voltax No. 710 Hearing Aid "B" Battery.

 

 

 

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Right side view of the Habafa Voltax No. 710 Hearing Aid "B" Battery.

 

 

 

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Top view of the Habafa Voltax No. 710 Hearing Aid "B" Battery showing the positive (+) terminal.

 

 

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Bottom view of the Habafa Voltax No. 710 Hearing Aid "B" Battery showing the negative (-) terminal.

 

 


 

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