SR626 Battery · Silver Oxide 1.55V
Tiny 6.8 mm cell for quartz watches - SR626 / AG4 / 377 crossover.
Specifications
- Voltage
- 1.55V
- Diameter
- 6.8 mm
- Thickness
- 2.6 mm
- Capacity
- 27 mAh
- Weight
- 0.3 g
- UL
- UN38.3
- CE
- RoHS
- ISO9001

An SR626 battery replacement is a 6.8 x 2.6 mm cell with the SR626SW / AG4 crossover - same cell by different names. The stamped number is the safest guide.
For watch repair channels we supply carded and bulk formats with a cross-reference list in every export carton.
Where it is used
- Watches
- Small electronics
Equivalent & Cross-Reference
- AG4
- 377
- SG4
Packing quantities are standard; other formats on request.
SR626 vs AG4 / 377
SR626, AG4 and 377 are the same 6.8 × 2.6 mm footprint. Our cells carry the crossover and run at 1.55V for quartz watches.
Wholesale & Custom Supply
Watch-size battery supply in carded and bulk formats, with cross-reference documentation for watch repair channels.
Battery Information for the EU Market
For each model we publish its full battery information file under Regulation (EU) 2023/1542 — chemistry system, performance data, hazardous substances statement and related documents.
General Information
- Battery Name
- Alkaline Zn-MnO₂ LR626/LR626H button cell (non-rechargeable)
- Category
- Portable battery
- Chemistry system
- Zn-MnO₂
- Model
- LR626/LR626H
- Trade/Brand name
- TianQiu/No-brand/OEM brands
- Nominal Voltage
- 1.5V
- Production Date
- According to customer requirements, generally printed on the battery body:Y-M For example: 64=2026-04 6X=2026-10 6Y=2026-11 6Z=2026-12
- Shelf Life
- One years under normal storage conditions
- Country of Origin
- China
Manufacturer
European Authorized Representative
- Apex CE Specialists GmbH
- Grafenberger Allee 277, 40237 Düsseldorf, DE
- Contact: Wells Yan
- Email: Info@apex-ce.com
- Tel: +49 2131 206 6043
Battery Characteristics Data Sheet
| Type | Approx. Weight | Capacity | MAD |
|---|---|---|---|
| Normal | 0.3g | 13mAh | 450.0 hours |
| Extra | 0.3g | 15.5mAh | 530.0 hours |
◆ Capacity & MAD test condition: 47KΩ 24h/day to 1.2V @ 20±2℃◆ Approx. weight only for reference
Critical Raw Materials
- Manganese
- Graphite
Hazardous Substances & SVHC Statement
No substances listed in the REACH Candidate List of Substances of Very High Concern (SVHC) are present above 0.1% w/w.
Related Documents
Manufacturer: DongGuan Tianqiu Enterprise Co., Ltd. — assessed against Articles 6 & 13 of Regulation (EU) 2023/1542.
FAQ
What is an SR626 battery?
A 1.55V button cell (silver-oxide crossover), 6.8 mm diameter and 2.6 mm high.
Is SR626 the same as AG4?
Yes — SR626, AG4 and 377 are equivalents; our cells carry the crossover and run at 1.55V.

