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

Varta No. 74 Hearing Aid "B" Battery

The Varta No. 74 hearing aid "B" battery was made by Varta AG of Germany around 1950.

 The Varta No. 74 battery measured 1⅜" by 19/32" in diameter (3.4 x 1.5 cm) and weighed 0.3 oz (9 g).

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Top view of the Varta No. 74 hearing aid "B" battery showing the positive terminal with the "+" in the center.
 

 


 

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Left side view of the Varta No. 74 hearing aid "B" battery showing it was made in Germany.

 


 

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Right side view of the Varta No. 74 hearing aid "B" battery with an inscription in German.

 


 

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Rear view of the Varta No. 74 hearing aid "B" battery showing the arrow indicating the positive terminal was at the top. Below the arrow, it gives the voltage of this battery (15 volts).

 


 

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Lower front view of the Varta No. 74 hearing aid "B" battery showing the model number (74).

 


 

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Rear view of the Varta No. 74 hearing aid "B" battery showing the letters "XP" punched into the wrapper (center).

 


 

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Bottom view of the Varta No. 74 hearing aid "B" battery showing the negative terminal.

 

 


 

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