Highfields Amateur Radio Club
Glossary of Radio Terms.

Appendix:
Battery Details.

This is 2 × 1/3N or 4 × LR44 in series with a shrink cover holding them together, and can be replaced by those, and a little ingenuity for the positive "pip", if required.

One point to note is that if the equipment is voltage sensitive it would be best to avoid Alkaline types as the voltage output is not stable over the life span of the battery.

Equivalents

1406LC, 1406SOP, 1414A, 23-469, 23-544, 2CR1108, 2CR1108/281, 2CR11108, 2CR1/3N, 2L76, 28, 28A, 28L, 476A, 4034PX, 4AG13, 4G13, 4H-C, 4LR44, 4LR44EP/1BB, 4MR44, 4NR44, 4NZ13, 4SR44, 544, 544A, 7H34, A544, A54464, CR28L, ETR-S, GP476, GP476A, HM-4C, K28A, K28L, KS28, L28PX, L544, L544BP, L1325, OX28, PX28, PX28A, PX28AB, PX28L, PX28LB, PX28-S, RFA-18, RPX28, S1325S, S1325, S28PX, V28PX, V28PXL, V34PX, V4034PX, L544, L544BP, PX28L, V28PXL,
See also A544, which is the same size with different chemistry.

Image
not to scale.		 Common
Name.		 Dimensions.
Length × Diameter.		 Chemical Composition. Nominal Voltage.
A544. 25.2 mm × 13.0 mm

Contacts:
Raised area Positive.
Flat Negitive on opposite end.

 Alkaline,

Silver Oxide (Ag2O).

 6 volts

6.2 volts (Ag2O).

2CR1/3N. 25.2 mm × 13.0 mm

Contacts:
Raised area Positive.
Flat Negitive on opposite end.

 Lithium. 6 volts.

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