LR721 Battery: 1.5V Alkaline, AG11 Equivalent
The 7.9 mm alkaline button cell — LR721 / AG11 equivalents.
Specifications
- Voltage
- 1.5V
- Diameter
- 7.9 mm
- Thickness
- 2.1 mm
- Capacity
- 20 mAh
- Weight
- 0.45 g
- UL
- UN38.3
- CE
- RoHS
- ISO9001
A LR721 replacement is usually a watch or small electronics job — the 7.9 mm diameter is the number to check, as 6.8 mm and 7.9 mm cells look alike in a drawer.
Buying LR721 in bulk? The AG/362A cross-reference is on the pack, so retailers match both naming systems from one stock.
Where it is used
- Watches
- Small electronics
Equivalent & Cross-Reference
- AG11
- 362A
Packing quantities are standard; other formats on request.
Wholesale & Custom Supply
Factory-direct bulk: LR721 ships 10 pcs per card, 200 pcs per box, private label and custom card counts 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 LR721/LR721H button cell (non-rechargeable)
- Category
- Portable battery
- Chemistry system
- Zn-MnO₂
- Model
- LR721/LR721H
- 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 |
|---|---|---|
| 0.35g | 13mAh | 460.0 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 LR721 battery?
A 1.5V alkaline button cell, 7.9 × 2.1 mm, about 20 mAh typical capacity — also stamped AG11 / 362A.
What is an LR721 compatible with?
AG11 and 362A — same size and voltage, interchangeable.
Is the LR721 mercury-free?
Yes — all TIANQIU alkaline button cells are 0% Hg, verified by an independent mercury-free testimonial.
