PlainBattery — Battery Cross-Reference Guide

Silver Oxide Button Cells (1.55V) reference

SR44

Battery equivalent chart, replacements, and specs

Silver Oxide Button Cells (1.55V)1.55VSilverOxide11.6×5.4 mmVerified Aug 25, 2026

SR44 aliases and equivalent names

Common search labels and closely related markings include 357, 303, SR44SW, SR44W, SR1154. Packaging conventions vary, so confirm the compatibility grade, voltage, chemistry, and dimensions shown below before replacing the battery.

Voltage

1.55 V

Chemistry

SilverOxide

Capacity

150–200 mAh

Size

11.6×5.4 mm

Size

SR4411.6 × 5.4 mm

Exact equivalents

Exact
  • 357 — Common US watch battery label
  • SR44SW — Low-drain silver oxide
  • SR44W — High-drain silver oxide

Compatible alternatives

Compatible
  • 303 — Low-drain silver oxide variant

Conditional alternatives

Conditional
  • LR44 — Alkaline — shorter life, lower stable voltage

Technical data

Specifications

SR44 specifications. Capacity depends on load, temperature and cutoff voltage; see the primary sources for test conditions.
SpecificationValue
IEC / Common CodeSR44
ChemistrySilverOxide
Nominal Voltage1.55 V
Capacity150–200 mAh
Cutoff Voltage~1.2 V
Dimensions (D × H)11.6 × 5.4 mm

Typical applications

  • Wrist watches
  • Digital calipers
  • Medical thermometers
  • Precision instruments

Applications

Replacement Compatibility

LR44Compatible

Alkaline LR44 fits but voltage sags faster under load

Frequently Asked Questions

Is 357 the same as SR44?

Yes. 357 is a widely used US label for SR44-size silver oxide button cells.

Should I always trust cross-reference charts?

Use this guide as a starting point, then confirm with your device manual. Chemistry and voltage must match for safe operation.

Related Batteries

Review record and primary sources

Reviewed by PlainBattery Technical Review Desk on 2026-08-25. Checked: model and alias mapping, nominal voltage and chemistry, physical dimensions, capacity range and replacement warnings.

  1. Silver Oxide (SR) and Alkaline Button (LR) Battery Specifications — Maxell. SR/LR model dimensions, voltage, nominal capacity and drain class.
  2. Energizer 357/303 / IEC SR44 Product Datasheet — Energizer Holdings, EBC-4349C. SR44/357/303 dimensions, chemistry, voltage and low-drain performance.

Revision record: source citations and field-level review scope added September 11, 2026. See our sources and methodology and corrections policy.

Selection notes

Choose SR44SW/357 for watches; SR44W for devices with brief high-current pulses.

Last verified Aug 25, 2026. Always confirm voltage, chemistry, and dimensions with the device manufacturer before replacing any battery.