Button cells · 1.55 V
SR626SWequivalents
The SR626SW is also sold as 377, 376, AG4, LR626, SR626 and 177. They are the same cell under different brand and standard names, so any of them fits.
Same battery, other names
- 377
- 376
- AG4
- LR626
- SR626
- 177
Size and specs
- Voltage
- 1.55 V
- Size
- 6.8 × 2.6 mm
- Chemistry
- Silver oxide. AG4, LR626 and 177 are alkaline versions of the same size.
- Capacity
- about 25 to 30 mAh
- Type
- Button cells
SR626SW by brand
Each maker's part number for this size, from the Maxell button battery cross-reference guide. All of them fit the same devices.
| Brand | Low drainSR626SW | High drainSR626W |
|---|---|---|
| Energizer | 377 | 376 |
| Duracell | D377 | – |
| Rayovac | 377 | – |
| Renata | 377 | – |
| Varta | V377 | – |
| Maxell | SR626SW | SR626W |
| Seiko | SB-AW | SB-BW |
| Citizen | 280-39 | 280-72 |
What uses an SR626SW
Typical devices and how long a fresh set usually lasts. Yours may differ.
| Device | Takes | Lasts |
|---|---|---|
| Wristwatch | 1 × SR626SW | about 2 years |
SR626SW vs SR621SW
Batteries people mix up with the SR626SW. Close, but not the same.
| Battery | Size, voltage | Difference |
|---|---|---|
| SR626SW | 6.8 × 2.6 mm1.55 V | This page. |
| SR621SW | 6.8 × 2.1 mm1.55 V | Same 6.8 mm width, 2.1 mm thick. Too thin to touch the contacts reliably. |
Good to know
- The SW in SR626SW means low drain, for a plain analogue watch. 376 (SR626W) is the high-drain version for watches with a light or alarm. Either one fits.
- This is the most common watch battery. Use silver oxide in a watch: an alkaline cell's voltage sags and the watch can lose time.
Questions
What is the equivalent of a 377 watch battery?
The SR626SW is also sold as 377, 376, AG4, LR626, SR626 and 177. They are the same cell under different brand and standard names, so any of them fits.
What size is a 377 watch battery?
6.8 × 2.6 mm, 1.55 V. Silver oxide. AG4, LR626 and 177 are alkaline versions of the same size.
What uses a 377 watch battery?
Common devices include wristwatch.
What do Energizer, Duracell, Varta and Renata call the SR626SW?
Energizer: 377 and 376. Duracell: D377. Varta: V377. Renata: 377. Other brands are in the table above.
Is a 377 battery the same as an SR626SW?
Yes. 377 is the common name for the SR626SW silver oxide watch cell. The 376 is the same size, made for watches that draw more current.
Battery Inventory for iPhone and iPad
Never look up the SR626SW again.
Battery Inventory remembers which battery every device in your home takes, reminds you when one is due, and counts the spares in your drawer, so you buy the right cell before the old one dies. The finder in the app knows every code on this page. Search any of them, or point the camera at a coin cell to read it.
- Battery change reminders, free
- Monthly smoke and CO alarm test reminders
- A spares drawer and shopping list
- Cordless tool packs and chargers too
No account needed. Smoke and CO alarm features are reminders only: the app can't see or test your alarms.
