Highfields Amateur Radio Club
Glossary Appendix.
copyright date

Battery Details.

This 201 battery has been discontinued a close match is the LR54. Details of both are shown below with the difference highlighted.

Image
not to scale.
Common
Name.
Dimensions.
Diameter × Thickness.
Chemical Composition. Nominal Voltage.
battery 201. 11.6 mm × 3.3 mm

Contacts:
Case and flat base Positive.
Raised area Negative.

Silver Oxide (Ag2O). 1.55 volts(Ag2O).
battery LR54. 11.6 mm × 3.1 mm

Contacts:
Case and flat base Positive.
Raised area Negative.

Alkaline,

Silver Oxide (Ag2O).

1.5 volts.

1.55 volts(Ag2O).

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