Reference dimensions are not universal manufacturing tolerances. Check the actual cell and holder.
The type status describes documentary checks of core specifications, not every fact or suitability for a device.
Understanding LR44 before replacement
Identify the actual battery
LR44 is a documented Alkaline zinc / manganese dioxide primary cell with a nominal voltage of 1.5 V. Its reference diameter is 11.6 mm and its reference height is 5.4 mm. These are nominal reference dimensions, not a promise that every manufacturer has identical tolerances.
This dataset describes a non-rechargeable bare cell, without solder tabs or wires. A tabbed or wired assembly requires a separate fit check.
What markings identify this type?
The dataset associates 1166A, A76, AG13 with LR44. The manufacturer may use a different label on the package. These references help identify the type; they do not certify the battery for a particular device.
Similar dimensions in this catalogue
The following types share the same reference diameter as LR44. Their height, chemistry or voltage may differ. They are comparisons, not approved substitutes:
LR44 and SR44 share 11.6 × 5.4 mm reference dimensions, but LR44 is an alkaline 1.5 V type and SR44 is a silver-oxide 1.55 V type. The dataset records conditions for substitution in each direction rather than a universal equivalence.
What to check before replacing LR44
Read the original device marking, verify nominal voltage and chemistry, compare diameter and height, and check the contacts and load requirements. Same diameter, identical voltage, or a familiar brand prefix alone is not enough to establish interchangeability.
The available data contains no affirmative device-specific fit test for LR44. A missing compatibility relation means “not assessed,” not “compatible.”
How reliable are these specifications?
Core type characteristics were compared with primary material from at least two independent publishers. This does not verify all model-specific values or physical suitability.
Not on the basis of size or matching names alone. Check the exact device requirements and the directed compatibility notes. This catalogue does not contain a guaranteed device-fit recommendation for LR44.
How does LR44 differ from PR44?
LR44 and PR44 have reference heights of 5.4 mm and 5.4 mm respectively, and nominal voltages of 1.5 V and 1.4 V. Their chemical systems are Alkaline zinc / manganese dioxide and Zinc–air. These comparisons do not establish a permitted replacement.