390 specifications
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.
Exact equivalents and aliases
390 is the canonical 1.55 V silver-oxide SR1130SW profile with 11.6 × 3.1 mm dimensions. 389 shares that envelope with a different W drain marking; 391 is 11.6 × 2.1 mm and is shorter; LR1130 is a 1.5 V alkaline profile in the 390 envelope.
The numeric 390 marking identifies the SW silver-oxide row in this catalog. Do not collapse 389, 391 or LR1130 into that alias: 389 changes drain marking, 391 changes height, and LR1130 changes chemistry and voltage.
| Marking | Catalog profile | Voltage | Chemistry | Dimensions | Decision |
|---|---|---|---|---|---|
| 390 / SR1130SW / D390 | 390 · Silver oxide | 1.55 V | Silver oxide | 11.6 × 3.1 mm | Exact alias / canonical profile Resolves to 390; verify polarity and the device marking.
|
| 389 | 389 · Silver oxide | 1.55 V | Silver oxide | 11.6 × 3.1 mm | Same size · different drain Use the suffix requested by the device or an explicit multi-drain cross-reference.
|
| 391 | 391 · Silver oxide | 1.55 V | Silver oxide | 11.6 × 2.1 mm | Same diameter · different height Use the specified height; do not rely on contact spring travel.
|
| LR1130 | LR1130 · Alkaline | 1.5 V | Alkaline manganese dioxide | 11.6 × 3.1 mm | Same fit · different chemistry Use only when the device maker explicitly approves both chemistry systems.
|
Conditional substitutes
389 is classified as conditional because the physical dimensions, chemistry and nominal voltage align while the drain marking differs. 391 is not equivalent because its normalized height is 2.1 mm rather than 3.1 mm. LR1130 is a same-size chemistry comparison and requires explicit device approval, if it is considered at all.
Physical fit is not electrical compatibility
The 11.6 × 3.1 mm envelope can explain why several 1130 codes appear in cross-reference searches. It cannot decide the application fit for a watch, instrument or other low-drain device.
How to verify before replacing 390
- Keep 390, 389, 391 and LR1130 as separate complete markings.
- Check both height and W/SW drain requirements before accepting a 1130 code.
- Confirm the chemistry and voltage before treating a same-size cell as a replacement.
Continue with: Compare a nearby button-cell size Run another battery comparison Review chemistry differences
Same-size batteries to review carefully
These profiles share the nominal physical envelope. They are not automatically equivalent.
Reviewed comparisons
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.