IEC
International Electrotechnical Commission — the usual datasheet language: LR44, SR44, CR2032, SR626SW.
Letters ≈ type (LR alkaline, SR silver oxide, CR lithium). Numbers ≈ size.
Prefer this code when the device maker prints one.
ANSI
Common on US and Canadian packs: A76, 357, 377, 364.
Often printed beside the IEC code on the same pack — not a different battery by itself.
AG / SG
Shop shorthand — not a formal standard.
AG ≈ alkaline button; SG ≈ silver oxide of a similar size.
AG13 ≈ LR44 size; SG13 ≈ SR44 size. Type differs — do not swap blindly.
JIS
Japanese Industrial Standards.
Japanese manuals usually still show familiar CR / LR codes.
L-numbers and brand prefixes
L1154 encodes size (about 11.6 × 5.4 mm); often the same alkaline family as LR44.
DL2032 (Duracell), ECR2032 (Energizer), V357 (Varta) are brand labels for the same standard cells.
Watch-trade numbers
Bench codes like 377 / 364 used by jewellers.
They map to silver-oxide watch batteries — not to CR2032 lithium coins.
Tools on this site
Check codes — look up a printed label and see what it matches.
Battery codes by market — how packaging habits differ by country.