364 (SR621SW) Battery
6.8 mm × 2.1 mm · 1.55V · 18 mAh
UL · UN38.3 · CE · RoHS · OEM MANUFACTURER
Technical Specification
1. Scope & Reference Standards
This specification provides the technical requirements of the 364 (SR621SW). The battery complies with the international and EU standards listed below; unless otherwise specified, requirements and sizes shall meet or exceed the referenced standard.
2. Chemical System, Voltage and Designation
3. Operating Temperature Range
-20℃ ~ +60℃
Per IEC 60086-5 for aqueous-electrolyte batteries — confirm with our engineers for your specific device.
4. Size & Weight
5. Product Tags & Application
Equivalent & Cross-Reference
These references are electrically compatible. Always match size and voltage before replacing.
Common Applications
364 (SR621SW) is used every day in these classes of devices — the cell is matched to each duty below, and every pack is tested against the appliance profile before dispatch.
Watches
Analog and digital quartz watches, from slim dress models to chronographs. Match the replacement to the diameter and thickness of the old cell.
Micro devices
Micro devices, sensors and pen instruments. Tiny cells keep prototyping products running without mains access.
Wholesale Battery Supplier — Factory Direct
Buy in Bulk: 364 (SR621SW) available for distribution in bulk packs, 5-pcs child-resistant cards or custom retail packaging under your brand. From blister cards to display boxes, your private label battery brand on every cell. Minimum order 50 cartons (about US$2,000) — a proven entry for chains testing private label battery lines.
EU Battery Regulation (EU) 2023/1542
Manufacturer declaration by DongGuan Tianqiu per Regulation (EU) 2023/1542 — compliance documents per model are stored on this site; models without a published declaration are issued per batch on request.
Chemical system (EU declaration): Silver Oxide (Ag₂O-Zn) · 1.55V
Primary batteries are non-rechargeable; keep out of reach of children.
Declaration Available on RequestDeclaration Available on Request
The official EU declaration for the 364 (SR621SW) is issued by our compliance team on request — per-batch COA and test data included. Contact us for the current document package.
- IEC 60086-1:2021 — Primary batteries — Part 1: General
- IEC 60086-2:2021 — Primary batteries — Part 2: Physical and Electrical Specification
- IEC 60086-3:2021 — Primary batteries — Part 3: Watch batteries
- IEC 60086-5:2021 — Primary batteries — Part 5: Safety of batteries with aqueous electrolyte
| Chemical system (EU declaration) | Silver Oxide (Ag₂O-Zn) |
|---|---|
| Nominal Voltage | 1.55V |
| Nominal Dimensions | 6.8 mm × 2.1 mm |
| Capacity | 18 mAh |
Same size as LR621 (alkaline) — the published declaration covers the alkaline LR621; silver-oxide declaration on request.
DongGuan Tianqiu Enterprise Co., Ltd.
TianQiu Industrial Park, Xinji Industrial Zone, Machong Town, Dongguan Guangdong, P.R.China
Post Code: 523142
E-mail: office@gdtianqiu.com
Apex CE Specialists GmbH
Grafenberger Allee 277, 40237 Düsseldorf, DE
Contact: Wells Yan
E-mail: Info@apex-ce.com
Tel: +49 21312066043
- Mercury (Hg): ≤ 0.0005% by weight
- Cadmium (Cd): ≤ 0.002% by weight (portable batteries only)
- Lead (Pb): ≤ 0.01% by weight (portable batteries only; zinc-air button cells exempt until 18 August 2028)
- REACH Regulation (EC) 1907/2006, Annex XVII — applicable restrictions complied with.
- EU POPs Regulation (EU) 2019/1021 — complied with.
Marking & Symbols — Regulation (EU) 2023/1542, Article 13
- CE marking — Indicates that the battery conforms to the applicable EU conformity requirements and is placed on the European market lawfully.
- Crossed-out wheeled bin symbol — Indicates that the battery must not be disposed of with household waste — separate collection is required.
- Do not recharge symbol — This battery is non-rechargeable; attempting to recharge it may cause leakage, fire or explosion.
- Service life marker — The XX.Xh circle mark shows the rated service life of the battery under reference discharge conditions.
- Keep out of reach of children symbol — A warning to prevent ingestion — small batteries cause severe burns in 2 hours; seek medical attention immediately.
Swallowing or ingestion of any button cell battery is a life-threatening injury!
Swallowing can lead to chemical burns, perforation of soft tissue, and death. Severe burns can occur within 2 hours of ingestion. Seek medical attention immediately.
Buying Guide: What Buyers Search for 364 (SR621SW)
If you are looking for a 364 (SR621SW) replacement, the key is to match the SR621SW · watch · replacement · equivalent references listed above before ordering — 364 (SR621SW) batteries ship in 5-pcs/10-pcs cards or bulk packs with full specification documents.
Buyers often compare 364 (SR621SW) against SR621SW · watch · replacement · equivalent — they share diameter or voltage but differ in thickness and capacity, so always match the original cell. Our engineers confirm compatibility for your device and provide the matching reference without guesswork.
For distributors and OEM buyers searching 364 (SR621SW) bulk, price and lead time: we supply from 50 cartons (≈ US$2,000) with volume-laddered pricing, shipping marks and transport certificates — request the current price list for your volumes.
Procurement Guide — How to Order
From first inquiry to production line in five steps, with one engineer on your order from start to finish.
Send your inquiry
Quantity in cartons or pieces, destination port and market. We reply within 24 hours with a complete quotation.
Check specs, approve samples
Spec sheets first, then samples by express in 3–7 days so you can test fit and performance on your own device.
Confirm the written offer
Price, MOQ (from 50 cartons, approx. US$2,000) and lead time are fixed in the offer, and the price is held for 30 days.
OEM / ODM preparation
Your logo, pack design and artwork enter the prepress flow; before mass production we print one sample box for your visual approval.
Production, QC and delivery
Mass production runs about 35 days from sample approval, with per-batch COA and transport certificates (UN38.3 for lithium cells) in the shipment.
Project Cases
Real OEM programs from the same factory — the ones that use this cell first, then other lines running at our site.
Seasonal Remote-Control Battery Program for a Home Appliance Brand
Remote battery line for TV and AC accessories: LR6/2BP and LR03/2BP paper packs under the customer label, 24 pcs per box, built around two seasonal production windows.
CASE 02CR2032 Child-Resistant Cards for a Key Fob Distributor
Locksmith and car-accessory channel supply: CR2032 on 5-pcs child-resistant cards (EU retail requirement), quarter replenishment driven by store sell-out.
CASE 03AA/AAA Shrink Packs for Toy Gift Bundles
Holiday gift-set line: AA/AAA in 2/4/8-pcs shrink packs with cartoon artwork, mixed-SKU cartons dropped to the customer warehouse.
FAQ
What is a 364 battery?
The 364 (SR621SW) is a 6.8 mm × 2.1 mm 1.55V silver-oxide button cell (~18 mAh) for ultra-thin movements.
What is a 364 battery equivalent to?
364 = SR621SW = AG1.
Can a 364 (SR621SW) be recharged?
No — the 364 (SR621SW) is a primary (non-rechargeable) Silver Oxide battery. Attempting to recharge it may cause leakage, fire or explosion; for rechargeable options see our rechargeable battery page.
More common questions
What is a 364 (SR621SW) battery?
The 364 (SR621SW) is a Silver Oxide battery of 6.8 mm × 2.1 mm rated 1.55V, with a capacity of 18 mAh — related searches include SR621SW · watch · replacement.
Read the full answer →Is a 364 (SR621SW) the same as SR621SW / AG1?
364 (SR621SW) references SR621SW / AG1 in different naming systems — IEC, AG and retail labels name the same size cell differently.
Read the full answer →364 (SR621SW) vs 371 (SR920SW) / 377 (SR626SW) / SR626 — what is the difference?
364 (SR621SW) and 371 (SR920SW) / 377 (SR626SW) / SR626 share similar diameters but differ in thickness and capacity: 364 (SR621SW) is 6.8 mm × 2.1 mm at 1.55V with 18 mAh.
Read the full answer →How long does a 364 (SR621SW) last?
Service life depends on device drain: 364 (SR621SW) typically runs 1–3 years in normal use and stores 3–5 years when kept cool and dry.
Read the full answer →What size is a 364 (SR621SW) battery?
364 (SR621SW) measures 6.8 mm in diameter and 2.1 mm in height (max dimension per IEC) — verify against your battery holder.
Read the full answer →What voltage is a 364 (SR621SW)?
The 364 (SR621SW) is rated 1.55V — always match the device voltage requirement before replacing.
Read the full answer →364 (SR621SW) replacement — which battery should I buy?
Buy the same reference 364 (SR621SW) (or its equivalent SR621SW / AG1) with the same voltage and dimensions.
Read the full answer →Does a 364 (SR621SW) fit in SR621SW · watch · replacement devices?
364 (SR621SW) fits devices designed for its size class: the references SR621SW · watch · replacement are the common entries for such devices.
Read the full answer →Can I buy 364 (SR621SW) in bulk?
Yes — 364 (SR621SW) is supplied in bulk, raw cards or retail packs from 50 cartons (≈ US$2,000), with volume-laddered pricing.
Read the full answer →364 (SR621SW) wholesale price — how is it quoted?
Wholesale pricing is laddered by carton volume and packaging format: raw, card or retail pack each carry different unit costs.
Read the full answer →Where can I buy 364 (SR621SW)?
We supply 364 (SR621SW) factory-direct worldwide — samples, bulk and OEM programs from the same production line.
Read the full answer →
Ready to Put Your Brand on a Great Battery?
Send us your logo and target market — we will reply with packaging options, MOQ and pricing within 24 hours.