No. 10 Zinc-Air Hearing Aid Battery
This No. 10 1.45 volt zinc-air hearing aid battery was made by an
unknown manufacturer, probably around 1996.
The No. 10 zinc-air battery measured 0.225" in diameter by
0.137" thick (0.56 x 0.35 cm) and weighed 0.001 oz. (0.25 g).
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The top side of the No. 10 zinc-air hearing aid battery showing the
smaller negative terminal.
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Side view of the No. 10 zinc-air hearing aid battery. The negative
terminal is at the top. Everything else is the positive terminal.
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Bottom view of the No. 10 zinc-air hearing aid battery showing the
standard yellow tab that covers the air holes so the battery won't
activate while on the shelf.
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Bottom view of a No. 10 zinc-air hearing aid battery showing the
positive terminal polarity (center) and 4 air holes necessary for
battery operation.
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Bottom view of another No. 10 zinc-air hearing aid battery showing the
positive terminal polarity (center) and only 1 air hole. For whatever
reason, various manufacturers used a different number of air holes in
their batteries.
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