390 Battery Equivalent
390 is the SR1130SW cell: 1.55 V silver oxide, 11.6 × 3.1 mm, so anything marked SG10, 387, 389 and SR54 is the same battery and will fit.
Full SR1130SW page: every equivalent, the sizes and what not to use
- Chemistry
- silver oxide
- Voltage
- 1.55 V
- Size (Ø × H)
- 11.6 × 3.1 mm
- Typical capacity
- 60–80 mAh
IEC designation SR1131. Sold as 389 ( high drain, W) and 390 ( low drain, SW) .
What the 390 code is
390 is one of the three-digit numbers Energizer and Renata use for silver-oxide watch cells. The digits encode nothing about the size, which is why a 390 and its IEC name look unrelated.
The IEC code for the same cell is SR1130SW: silver oxide, 1.55 V, 11.6 × 3.1 mm.
390 is the low-drain number for SR1130SW: built for a steady trickle, such as a plain quartz watch movement. The same case size is also sold as 389, the high-drain number. Both are 1.55 V and both fit the same holder.
SR1130SW equivalents
Direct replacements
The same cell under another code. Any of these fits, whatever the brand.
- SG10
- 387
- 389 · High drain (W)
- 390 · Low drain (SW)
- SR54
- SR1130
Upgrade or downgrade
Same size, different chemistry. Read the verdict before you buy.
| Cell | Chemistry | Voltage | Verdict |
|---|---|---|---|
| LR1130 | alkaline | 1.5 V | Downgrade Works, but runs out sooner. Avoid in watches and medical devices. |
Similar size, check the fit
Same diameter, different thickness. These are not drop-in replacements.
| Cell | Size | Verdict |
|---|---|---|
| SR1116SW | 11.6 × 1.65 mm | Same 11.6 mm diameter, but 1.65 mm tall instead of 3.1 mm. Only if the holder fits; thinner cells can lose contact. |
| SR1120SW | 11.6 × 2.1 mm | Same 11.6 mm diameter, but 2.1 mm tall instead of 3.1 mm. Only if the holder fits; thinner cells can lose contact. |
| SR1126 | 11.6 × 2.6 mm | Same 11.6 mm diameter, but 2.6 mm tall instead of 3.1 mm. Only if the holder fits; thinner cells can lose contact. |
| SR42 | 11.6 × 3.6 mm | Same 11.6 mm diameter, but 3.6 mm tall instead of 3.1 mm. Only if the holder fits; thinner cells can lose contact. |
| SR43 | 11.6 × 4.2 mm | Same 11.6 mm diameter, but 4.2 mm tall instead of 3.1 mm. Only if the holder fits; thinner cells can lose contact. |
| SR44 | 11.6 × 5.4 mm | Same 11.6 mm diameter, but 5.4 mm tall instead of 3.1 mm. Only if the holder fits; thinner cells can lose contact. |
390 questions
- What battery is 390?
- 390 is the SR1130SW: a 1.55 V silver oxide cell, 11.6 × 3.1 mm, with a typical capacity of 60–80 mAh.
- Is 390 the same as SR1130SW?
- Yes. They are two codes for one cell, so a pack marked either way holds the same battery.
- Is 390 low drain or high drain?
- 390 is the low-drain number for SR1130SW: built for a steady trickle, such as a plain quartz watch movement. The same case size is also sold as 389, the high-drain number. Both are 1.55 V and both fit the same holder.
- What can I use instead of 390?
- Any code in the direct replacement list above. LR1130 is the same size in another chemistry: Works, but runs out sooner. Avoid in watches and medical devices.
- What voltage is 390?
- 1.55 V, the same as any other SR1130SW.