SR626SW Battery Equivalent
SR626SW is the same cell as SG4, 376, 377 and SR66, so any of those codes will fit; LR626 is the same size in alkaline and will work, though it runs out sooner.
- Chemistry
- silver oxide
- Voltage
- 1.55 V
- Size (Ø × H)
- 6.8 × 2.6 mm
- Typical capacity
- 24–27 mAh
IEC designation SR626. Sold as 376 ( high drain, W) and 377 ( low drain, SW) .
SR626SW equivalents
Direct replacements
The same cell under another code. Any of these fits, whatever the brand.
- SG4
- 376 · High drain (W)
- 377 · Low drain (SW)
- SR66
- SR626
Upgrade or downgrade
Same size, different chemistry. Read the verdict before you buy.
| Cell | Chemistry | Voltage | Verdict |
|---|---|---|---|
| LR626 | 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.
Low drain or high drain
SR626SW 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): 377
- A steady trickle of current: a quartz watch with hands, a thermometer, a key fob.
- High drain (W): 376
- 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 SR626SW cell
Commonly used in many wrist watches.
On the shelf it is sold with a SR626 on the pack .
SR626SW questions
- Is SG4 the same as SR626SW?
- Yes. SG4 is another code for the same cell: silver oxide, 1.55 V, 6.8 × 2.6 mm.
- Is 376 the same as SR626SW?
- Yes. 376 is another code for the same cell: silver oxide, 1.55 V, 6.8 × 2.6 mm.
- Can I use LR626 instead of SR626SW?
- Works, but runs out sooner. Avoid in watches and medical devices.
- Will SR616SW work in place of SR626SW?
- Same 6.8 mm diameter, but 1.65 mm tall instead of 2.6 mm. Only if the holder fits; thinner cells can lose contact.
- Will SR621SW work in place of SR626SW?
- Same 6.8 mm diameter, but 2.1 mm tall instead of 2.6 mm. Only if the holder fits; thinner cells can lose contact.
- What voltage is SR626SW?
- SR626SW is a 1.55 V silver oxide cell with a typical capacity of 24–27 mAh.
- What size is SR626SW?
- 6.8 mm across and 2.6 mm thick.