Siemens? No. X43 R656 Hearing Aid Battery
The Siemens? No. X43 R656 battery was a 3-volt carbon-zinc hearing aid battery.
It was used in carbon hearing aids around 1925.
The Siemens? No. X43 R656 battery weighed 6¼ oz, and measured
2¾" high
by 2⅜" wide by 13/16" thick.
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Top view of the Siemens? No. X43 R656 battery showing the two battery
terminals placed along one side of the top rather than in the center as
was more usual.
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Close up view of the Siemens? No. X43 R656 battery terminals.
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Bottom view of the Siemens? No. X43 R656 battery showing the number
marked on it.
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