Match My Battery

Silver oxide

337 Battery Equivalent: SR416SW & D337

SR416SW and D337 are exact aliases for the 337 silver-oxide battery. Confirm the 4.8 × 1.6 mm size and low-drain marking before installation.

Technical content reviewed 2026-09-08

SR416SWD337
Nominal voltage
1.55 V
Dimensions
4.8 × 1.6 mm
Chemistry
Silver oxide

337 specifications

Canonical code337
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.

Equivalence and fit table

These rows use the catalog’s source-backed profile data and compatibility rules. An exact alias resolves to the same profile; every other row is a comparison to review, not an automatic substitute.

MarkingCatalog profileVoltageChemistryDimensionsFit decision
337 / SR416SW / D337337 · Silver oxide1.55 VSilver oxide4.8 × 1.6 mmExact catalog match
Resolves to 337; confirm polarity and the device marking.

Fit guidance for 337

The catalog resolves 337 and SR416SW and D337 to the 337 profile. Reviewed comparison rows are . Use the Fit decision column and the device manual before selecting a non-exact row.

Verify before replacing 337

  1. Read the complete marking and check whether it resolves to 337 or to another profile.
  2. Compare the 1.55 V, Silver oxide, and 4.8 × 1.6 mm values shown above with the device manual.
  3. For a non-exact row, follow its generated fit decision and confirm polarity, terminals, drain behavior, or charging requirements before installation.

Related reading: How to read a button-cell code · How W and SW drain suffixes differ · How to measure a battery safely

Same-size batteries to review carefully

These profiles share the nominal physical envelope. They are not automatically equivalent.

LR416 Alkaline 1.5 V 4.8 × 1.6 mm

Reviewed comparisons

337 vs LR416Same fit · different chemistry

Technical sources

  1. International Electrotechnical Commission — IEC 60086-1:2026 — Primary batteries, general requirements

    Primary-battery nomenclature, form, fit, function, terminal and electrochemical-system framework.

  2. Energizer — Battery Replacement Guide

    Cross-reference codes and manufacturer guidance to replace the same size and type together.

  3. Duracell — Battery Cross Reference Chart

    Independent manufacturer cross-reference families and corresponding product numbers.

  4. Duracell — Battery chemistry technical bulletins

    Alkaline, lithium-manganese-dioxide, zinc-air and silver-oxide chemistry behavior.