364 Battery: 1.55V Silver Oxide, SR621SW Equivalent
Small 6.8 mm watch cell - SR621SW family, AG1 crossover.
Specifications
- Voltage
- 1.55V
- Diameter
- 6.8 mm
- Thickness
- 2.1 mm
- Capacity
- 18 mAh
- Weight
- 0.25 g
- UL
- UN38.3
- CE
- RoHS
- ISO9001
A 364 battery replacement fits the small watch slots: 6.8 x 2.1 mm. The 364 vs 371 difference is diameter - 6.8 mm against 9.5 mm.
For watch channels we card 364 / SR621SW cells with AG1 cross-references included in every pack.
Where it is used
- Watches
- Small electronics
Equivalent & Cross-Reference
- SR621SW
- AG1
Packing quantities are standard; other formats on request.
364 vs 371
At 6.8 × 2.1 mm, the 364 is the small watch battery; the 371 is 9.5 mm wide. For tiny, low-profile watches the 364/SR621SW is the standard fit.
Wholesale & Custom Supply
364 in bulk from the factory — carded retail or inner-box formats, private label supported.
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 LR621/LR621H button cell (non-rechargeable)
- Category
- Portable battery
- Chemistry system
- Zn-MnO₂
- Model
- LR621/LR621H
- 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
| Approx. Weight | Capacity | MAD |
|---|---|---|
| 0.28g | 9mAh | 455.0 hours |
◆ Capacity & MAD test condition: 68KΩ 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 a 364 battery?
A 1.55V button cell (silver-oxide crossover), 6.8 mm diameter and 2.1 mm high - SR621SW, AG1 equivalent.
What battery replaces 364?
SR621SW and AG1 are direct equivalents.
How long does a 364 battery last?
About 1–2 years in a quartz watch.
Is 364 the same as AG1?
Yes — the AG-series name of the same cell.
Is the 364 rechargeable?
No, it is a primary cell.
