SR44 Battery Equivalent
SR44 is the same cell as SG13, S76, EPX76, 303 and 357, so any of those codes will fit; LR44 is the same size in alkaline and will work, though it runs out sooner.
- Chemistry
- silver oxide
- Voltage
- 1.55 V
- Size (Ø × H)
- 11.6 × 5.4 mm
- Typical capacity
- 160–175 mAh
IEC designation SR1154. Sold as 303 ( low drain, SW) and 357 ( high drain, W) .
SR44 equivalents
Direct replacements
The same cell under another code. Any of these fits, whatever the brand.
- SG13
- S76
- EPX76
- 303 · Low drain (SW)
- 357 · High drain (W)
Upgrade or downgrade
Same size, different chemistry. Read the verdict before you buy.
| Cell | Chemistry | Voltage | Verdict |
|---|---|---|---|
| LR44 | 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 5.4 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 5.4 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 5.4 mm. Only if the holder fits; thinner cells can lose contact. |
| SR1130SW | 11.6 × 3.1 mm | Same 11.6 mm diameter, but 3.1 mm tall instead of 5.4 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 5.4 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 5.4 mm. Only if the holder fits; thinner cells can lose contact. |
Do not use
These are the same size or a similar code, and they are not equivalents.
-
675
Zinc-air hearing-aid cell: same size, but 1.45 V, needs air holes and drains once unsealed.
Low drain or high drain
SR44 is sold under two numbers for the same case size. Manufacturers mark low-drain cells SW and high-drain cells W, which records what the cell is built to deliver rather than how big it is.
- Low drain (SW): 303
- A steady trickle of current: a quartz watch with hands, a thermometer, a key fob.
- High drain (W): 357
- Short bursts of heavier current: a watch with a backlight, an alarm or a chronograph.
Both are 1.55 V and both fit the same holder, so either will run the device. The matched one lasts longer.
About the SR44 cell
Typical internal resistance: 8 ohms
SR44 questions
- Is SG13 the same as SR44?
- Yes. SG13 is another code for the same cell: silver oxide, 1.55 V, 11.6 × 5.4 mm.
- Is S76 the same as SR44?
- Yes. S76 is another code for the same cell: silver oxide, 1.55 V, 11.6 × 5.4 mm.
- Can I use LR44 instead of SR44?
- Works, but runs out sooner. Avoid in watches and medical devices.
- Will SR1116SW work in place of SR44?
- Same 11.6 mm diameter, but 1.65 mm tall instead of 5.4 mm. Only if the holder fits; thinner cells can lose contact.
- Will SR1120SW work in place of SR44?
- Same 11.6 mm diameter, but 2.1 mm tall instead of 5.4 mm. Only if the holder fits; thinner cells can lose contact.
- Can I use 675 instead of SR44?
- No. Zinc-air hearing-aid cell: same size, but 1.45 V, needs air holes and drains once unsealed.
- What voltage is SR44?
- SR44 is a 1.55 V silver oxide cell with a typical capacity of 160–175 mAh.
- What size is SR44?
- 11.6 mm across and 5.4 mm thick.