Independent battery code reference
Resolve a printed battery code into one canonical family, then check size, voltage, chemistry and drain context before replacing anything.
Start with what you have
Search supported maker numbers, IEC codes and common aliases across the canonical dataset.
Canonical result for LR44
Do not match by dimensions alone. The device maker’s specification remains authoritative.
Compatibility is more than size
Codes resolve to one approved canonical family.
Physical fit may match; electrical behaviour differs.
Dimensions alone do not establish equivalence.
A material physical or electrical mismatch.
Explore the catalogue
Browse every supported marking in the code and alias index, explore button and coin-cell families, or open the complete page index. Each canonical record keeps aliases, dimensions, chemistry, voltage, drain context, substitution guidance and source routes together.
Declared boundary
The public catalogue covers evidence-backed alkaline and silver-oxide button cells, lithium coin cells, zinc-air hearing-aid sizes and core alkaline household formats. Unsupported retailer-only, rechargeable and specialist codes are not guessed into equivalence. Read the source methodology or report a correction.
Safety before substitution
Keep batteries away from children. If ingestion is suspected, use the official emergency route for your country immediately.
Read the safety guidance