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LR54: drawing from the dataset, diameter 11.6 mm, height 3.05 mmØ 11.6 mm3.05 mmTOPSIDE
Fig. 1 — LR54. Outline only. Both views share one scale. The terminal step, seal and markings are not drawn.

1.5 V · 11.6 × 3.05 mm · Alkaline manganese button

LR54 is a listed designation for this alkaline manganese button cell, 1.5 V, 11.6 × 3.05 mm. Figures below are copied from the datasheets and charts linked at the bottom.

Ratings from the cited sheets
ChemistryAlkaline manganese button
Nominal voltage1.5 V
Diameter × height11.6 × 3.05 mm
Energizer 189 drawing prints diameter 11.60 / 11.25 mm and height 3.05 / 2.75 mm. Renata states 3.1 mm height for the silver-oxide cells of this outline.
Designation on the datasheetIEC-LR54
WeightEnergizer 1.1 grams (0.04 ounces)

Can I substitute it?

Silver-oxide neighbours at 11.6 × 3.1 mm are 390 (low drain) and 389 (high drain). Energizer 189, which is this alkaline cell, draws a maximum height of 3.05 mm; Renata states 3.1 mm for the silver-oxide pair. AG10 is on that same cross-reference line. LR1130 is a code shoppers use for this size. It is not printed on the Renata chart or the Energizer guide, so it is not listed as an equivalent.

Size check at real size

Lay the old cell on the outline. This shows the top outline (diameter) and the side outline (height) at 1:1 once the screen is calibrated.

Capacity

SourcemAhTest as printed
Energizer8080 mAh (to 0.9 volts)

Devices named on the Energizer guide

Watches, toys. See watches, toys, games and books.

Same outline

Alkaline manganese button cells

An LR button is zinc/manganese dioxide with an alkaline electrolyte, nominal 1.5 V. Energizer's miniature alkaline handbook puts the open-circuit voltage near 1.6 V and then shows a sloping discharge, and it says the cathode swells as the cell empties. The cell is built to be the cheaper part. The handbook's own rule for using it in place of silver oxide is narrow: only where the device manufacturer recommends the substitution.

The size that dominates the search logs is LR44. Energizer sells it as A76, designation ANSI/NEDA 1166A, IEC-LR44. The current A76 datasheet rates 150 mAh to 0.9 V on 6.8 kΩ at 21°C. Renata's scope chart, July 2016, rates LR44 at 110 mAh and states the outline as 11.6 × 5.4 mm. Same code, two tests, two numbers. The Energizer A76 product page lists AG13 among the labels that A76 replaces, which is why a search for AG13 lands here. It also lists 357, SR44 and SG13. Those last three are silver-oxide designations for the same outline. Energizer is telling you the A76 will fit and run the device. The handbook is telling you it will not hold voltage the way 357 does. Both documents are Energizer's. Fit is not the same claim as service life.

LR41, LR43 and LR54 are the smaller alkaline outlines, Energizer numbers 192, 186 and 189. AG12 and AG10 show up on Energizer's cross-reference on the same lines as those alkaline cells and as the silver-oxide cells of the same diameter and height. An AG10 search is answered with the alkaline LR54 facts, and the silver-oxide neighbours are linked beside it, not folded into it.

Sources

Last verified 2026-10-29.