Eveready D888 Hearing Aid "A" Battery
This is an English Eveready 4½ volt battery used in
carbon hearing aids during the 1920s and 1930s.As you can see, the
cost was 2 shillings.
This battery weighed 8 oz., and measured 3¾" by 3" by 1".
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The reverse side of the above D888 Eveready battery declaring
"Specially manufactured for acoustic kits."
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This is a newer version of the 4½ volt Eveready D888 hearing aid "A"
battery, now used in vacuum tube hearing aids in the 1930s and 1940s. The Eveready D888 "A" battery
could be paired with the Eveready B112 "B" battery.
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The reverse side of this D888 Eveready "A" battery declaring
"Specially designed for use in hearing aids."
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Top view of the Eveready D888 "A" battery showing the 3 pin socket
for the "A" battery cord. Only the two outside pins were used. The
one on the right is larger so you couldn't plug them in with the
polarity reversed.
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