SR626Ø6.8mm × 2.6mm
Dimensional drawing from our own cell data (6.8mm × 2.6mm).
SR626 product photo available on request
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Coin Cell Battery

SR626 Battery - 1.55V Silver Oxide Coin Cell

The SR626 silver oxide 1.55V coin cell — 6.8mm diameter, 27mAh capacity. Ideal for watches, micro devices.

The SR626 is a 1.55V silver oxide coin cell — 6.8mm in diameter and 2.6mm thick, rated 27mAh. Its cross-references are SR626SW, 377, 376. It is used in watches, micro devices. Available factory-direct for wholesale and OEM projects, with your brand on the cell and the packaging.
1.55V
Voltage
27mAh
Capacity
6.8mm
Diameter
MOQ from 50 cartons Samples available Lead time per quote
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Specifications

What are the specifications of a SR626 battery?

The SR626 is a Silver Oxide coin cell rated 1.55V, with a nominal capacity of 27mAh. It measures 6.8mm across and 2.6mm thick, and weighs 0.3g. The table below gives the full specification — final values are confirmed on the OEM spec sheet for your project.

ChemistrySilver Oxide
Voltage1.55V
Diameter6.8mm
Thickness2.6mm
Capacity27mAh
Weight0.3g
CompatibleSR626 = SR626SW = 377 = 376

Specs for reference — final values per OEM project.

SR626SW vs 377

SR626SW and 377 are the same 6.8mm x 2.6mm, 1.55V silver-oxide watch battery. The SR626 is also listed as AG4 or SG4. Either marking is a direct replacement for your watch.

Model guides: 377 battery
Cross Reference

What batteries are equivalent to the SR626?

The SR626 is interchangeable with any cell of the same diameter, thickness and voltage, so an equivalent can be substituted without changing the device. Buyers look these cells up under three numbering systems at once — IEC, ANSI and manufacturer codes — and the list below covers the names the SR626 is sold under.

Look any number up in the cross-reference tool → — type the marking on your cell and see where it lands, or pick your device and see the cells we supply for it.

Compiled from manufacturer cross-reference documentation — Maxell's Micro Battery Cross Reference and Replacement Guide, the Duracell 2024 Battery Specifications, Energizer's battery cross-reference guide and product datasheets, Varta datasheets, and Renata's product pages. A number listed in the same family is a drop-in replacement; numbers in the other family share the same footprint and will physically fit, but are a different chemistry and may differ in voltage, capacity and discharge curve. Confirm against your device's requirements and the cell marking before ordering.
Same holder, different chemistry: SR626/SR626SW/377/376 are 1.55V silver-oxide cells at 6.8 x 2.6mm; AG4 / LR626 is the 1.5V alkaline cell of the same size. Silver oxide is specified for watches because its voltage stays flat as it discharges — an alkaline cell will fit but the watch can run fast or lose time as the voltage sags.

Alkaline 1.5V — direct replacement

Number on the cellPublished by
AG4 / G4Atrade name for the 1.5V alkaline cell of this size (6.8 x 2.6mm) — not listed in the Duracell, Energizer, Maxell or Renata charts consulted; single source, verify on the cell
LR626IEC type for the alkaline cell of this size — verify against the device data sheet

Silver oxide 1.55V — same size, different chemistry

Number on the cellPublished by
377Energizer (own model) · Maxell · Duracell · Renata
376Maxell · Duracell (376/377 row)
SR626SWIEC type · Maxell · Duracell
SR626WIEC type · Maxell
D377Duracell (own code) · Maxell
V377 / V376Varta (own code) · Maxell
SB-AWSeiko (own code) · Maxell · Duracell
SB-BWSeiko (own code) · Maxell
280-39Citizen (own code) · Maxell · Duracell
280-72Citizen (own code) · Maxell
606 / 619Bulova (own code) · Maxell
SR66Vinnic / GP (own code) · Maxell
Sources for this cross-reference: These tables are compiled from manufacturers' own cross-reference documentation. Equivalent numbers mean the cell will fit and operate in the same holder; capacity and discharge curve can still differ between brands and between chemistries, so confirm the specification for the device you are powering. Numbers marked "single source" appear in one manufacturer's documentation only — ask us and we will confirm on a sample.
Applications

Where is the SR626 battery used?

The SR626 is used in watches, micro devices and other compact devices that draw small currents over long periods. Its 1.55V output and 27mAh capacity suit equipment that has to run for months without a battery change. The blocks below set out what to check for each device type.

Watches
Watches
Micro devices
Micro devices

SR626 Watch Battery

The SR626 is a common watch battery cell. Match the model number on your old cell (SR626 = SR626SW = 377 = 376) to the one you replace it with — same size and voltage means an easy swap.

Buyers Also Search

What do buyers ask about the SR626 battery?

Next step

Need the SR626 priced, or the same cell printed and packed under your own brand? Send the quantity, the target market and the packaging format, and we return price, MOQ band and the SR626 data sheet.

Printed, blister-carded and boxed in our own plant, from 50 cartons per product line. Samples are available before a production run — tell us the device the cell goes into.

FAQ

SR626 Battery FAQs

What is a SR626 battery?

SR626 is a 6.8mm diameter, 2.6mm thick silver oxide coin cell with 1.55V output and ~27mAh capacity.

What is the SR626 compatible with?

SR626SW, 377, 376 — same size and voltage, interchangeable with SR626.

What is a SR626 battery equivalent to?

SR626SW, 377, 376 — these are the same 6.8mm x 2.6mm cell at 1.55V, sold under different manufacturer codes, so they fit and operate in any device that specifies a SR626. Capacity and discharge curve can still differ between brands and chemistries.

Is the SR626 rechargeable?

Standard SR626 is a primary (non-rechargeable) silver oxide battery.

How long does a SR626 battery last?

In a low-drain device (watch, CMOS, spare key fob) a SR626 typically lasts several years; in high-drain use the cycle is shorter.

Does a SR626 fit my device?

SR626 fits any device that specifies a SR626 cell or a listed compatible equivalent (SR626SW, 377, 376).

How do I get SR626 battery wholesale pricing?

Pricing depends on cell grade, quantity and packaging, so quotes are issued per project rather than from a fixed list. Send your quantity, target market and label or packaging requirements, and we return a landed-cost quote together with samples — usually within one working day.

Related

These models share chemistry, voltage or form factor with the SR626 and are frequently specified alongside it. Where a device accepts more than one size, confirm the battery-bay dimensions before ordering — each card below links through to the full specification and equivalents.

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