John Bell & Croyden Type RA-HT Hearing Aid "B" Battery
The John Bell & Croyden Type RA-HT battery was a 32-volt hearing aid
"B" battery used in certain vacuum tube hearing aids
in the 1930s. The actual manufacturer is unknown.
This battery weighed 13 oz, and measured
4⅛" long
by 1¾" wide by 2⅛" high.
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The label on the side of the John Bell & Croyden Type RA-HT
battery reads "John Bell & Croyden/Wigmore Street, London, W.1." then
"The Complete Hearing Service" and "When Re-ordering please quote Type
No. Ra-HT."
This battery was used in the
John
Bell & Croyden vacuum tube hearing aid.
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