397 specifications
Canonical code397
Formbutton
RechargeableNo
Drain markinglow
Typical applications
- Analog watches
- calculators
- low-drain instruments
Replacement decision
Resolve the original marking to this profile, then confirm nominal voltage, chemistry, dimensions, polarity and any drain or terminal suffix. Capacity alone does not establish interchangeability.
Same-size batteries to review carefully
These profiles share the nominal physical envelope. They are not automatically equivalent.
Reviewed comparisons
397 vs 396Same size · different drain397 vs LR726Same fit · different chemistry397 vs 362Same diameter · different height397 vs 361Same diameter · different height397 vs 329Same diameter · different height397 vs 315Same diameter · different height397 vs 392Same diameter · different height397 vs 384Same diameter · different height
Technical sources
- International Electrotechnical Commission — IEC 60086-1:2026 — Primary batteries, general requirements
Primary-battery nomenclature, form, fit, function, terminal and electrochemical-system framework.
- Energizer — Battery Replacement Guide
Cross-reference codes and manufacturer guidance to replace the same size and type together.
- Duracell — Battery Cross Reference Chart
Independent manufacturer cross-reference families and corresponding product numbers.
- Duracell — Battery chemistry technical bulletins
Alkaline, lithium-manganese-dioxide, zinc-air and silver-oxide chemistry behavior.