Match My Battery

Silver oxide

371 battery replacement and equivalents

371 is a 1.55 V silver oxide button battery measuring 9.5 × 2.1 mm. Match the complete specification before treating another marking as a replacement.

SR920SWD371
Nominal voltage
1.55 V
Dimensions
9.5 × 2.1 mm
Chemistry
Silver oxide

371 specifications

Canonical code371
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.

370 Silver oxide 1.55 V 9.5 × 2.1 mm LR920 Alkaline 1.5 V 9.5 × 2.1 mm

Reviewed comparisons

371 vs 370Same size · different drain371 vs LR920Same fit · different chemistry371 vs 373Same diameter · different height371 vs 399Same diameter · different height371 vs 395Same diameter · different height371 vs 394Same diameter · different height

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.