Silver Oxide Button Cells (1.55V) reference
357
1.55V silver oxide watch cell — SR44 size. Same outline as LR44, flatter voltage for quartz movements.
Voltage
1.55 V
Chemistry
SilverOxide
Capacity
150–200 mAh
Size
11.6×5.4 mm
35711.6 × 5.4 mm
Exact equivalents
Exact- SR44 — Same size and chemistry class
- SR44SW — Same size and chemistry class
Conditional alternatives
Conditional- LR44 — Alkaline alternative
Technical data
Specifications
| Specification | Value |
|---|---|
| IEC / Common Code | 357 |
| Chemistry | SilverOxide |
| Nominal Voltage | 1.55 V |
| Capacity | 150–200 mAh |
| Cutoff Voltage | ~1.2 V |
| Dimensions (D × H) | 11.6 × 5.4 mm |
Typical applications
- Watches
- Hearing-aid accessories
- Meters
Applications
Side-by-side comparisons
Frequently Asked Questions
LR44 vs 357 — are they interchangeable?
They share the same size. 357 (silver oxide) delivers more stable voltage and longer service life than alkaline LR44 in watches.
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.
- Silver Oxide (SR) and Alkaline Button (LR) Battery Specifications — Maxell. SR/LR model dimensions, voltage, nominal capacity and drain class.
- 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
Prefer silver oxide over alkaline LR44 when your device specifies 357 or SR44.
Last verified Aug 25, 2026. Always confirm voltage, chemistry, and dimensions with the device manufacturer before replacing any battery.