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LR621 Zn-MnO₂ battery product photo
Zn-MnO₂

LR621 Battery

LR621/LR621H Alkaline Zn-MnO₂ Button. 9mAh capacity, 1.5V nominal — factory-direct from TIANQIU with OEM custom label & packaging, compliant with EU 2023/1542.

LR621/LR621H Alkaline Zn-MnO₂ Button — a 1.5V Zn-MnO₂ battery supplied factory-direct by TIANQIU, documented at 9mAh capacity. Every unit ships with UL, CE and EU 2023/1542 documentation, and the model is available for wholesale orders or OEM production under your own brand. Request the data sheet or a sample to confirm fit before ordering.
ULCEEU 2023/1542
0% mercury OEM / custom label MOQ & quote on request
At a glance

What is a LR621 battery?

LR621 (also sold as LR621H) is a 1.5V Zn-MnO₂ 6.8 × 2.15 mm button cell rated 9mAh. The cell of the same size in silver oxide is 364 (SR621SW) / SR621SW — same holder, different chemistry, so fit the type your device specifies. TIANQIU manufactures and supplies it factory-direct, with OEM label and packaging.

Nominal voltage1.5V
ChemistryZn-MnO₂
Size (diameter × thickness)6.8 × 2.15 mm
Rated capacity9mAh
Also sold asLR621 / LR621H

Every equivalent number this cell is sold under, with the manufacturer source for each row, is in the cross-reference section.

Specifications

What are the specs of a LR621 battery?

Battery NameAlkaline Zn-MnO₂ LR621/LR621H button cell (non-rechargeable)
ModelLR621
CategoryPortable battery
Chemistry systemZn-MnO₂
Trade / BrandTIANQIU/No-brand/OEM brands
Shelf LifeOne years under normal storage conditions
Production DateAccording to customer requirements, generally printed on the battery body:Y-MFor example: 64=2026-04 6X=2026-10 6Y=2026-11 6Z=2026-12
Country of OriginChina

Alkaline zinc-manganese dioxide cells deliver 1.5 V with a long shelf life, which makes them the everyday choice for low to medium drain devices such as toys, torches, meters and thermometers. The LR621 is produced on our own lines in China and can be supplied as a bare cell, on a blister card or in a printed box. Each is marked for LR621 and ships with its own EU declaration of conformity.

Cross Reference

Which other numbers does the LR621 go under?

This is the 1.5V alkaline cell in the 6.8 × 2.15 mm size. As with the LR626, we could not verify the alkaline trade names for this size against a manufacturer chart, so none are listed as confirmed. The 1.55V silver-oxide cell of the same size is 364 / SR621SW, and that is what most low-drain devices specify.

Same chemistry — direct replacement (LR621 family)

Number on the cellPublished by
AG1 / G1A / LR621retail trade name for the 1.5V alkaline cell of this size — not listed in the Duracell, Energizer, Maxell or Renata cross-reference charts consulted — single source, treat as unconfirmed; check the marking on your cell and device

Same 6.8 × 2.15 mm footprint, different chemistry — silver oxide 1.55V

Number on the cellPublished by
364 (SR621SW)Energizer (own model) · Duracell · Maxell
SR621SWIEC type · Maxell
D364Duracell (own code) · Maxell
V364Varta (own code) · Maxell
SB-AGSeiko (own code) · Maxell
280-34Citizen (own code) · Maxell
602Bulova (own code) · Maxell
TTimex (own code) · Maxell
SR60Vinnic / GP (own code) · Maxell
Sources: Maxell's Micro Battery Cross Reference and Replacement Guide · Duracell 2024 Battery Specifications · Energizer battery cross-reference guide and product data sheets · Varta data sheets · Renata product pages. Every number above was checked against manufacturer-authored cross-reference documentation; where a number appears in only one manufacturer's material it is marked accordingly. Numbers in the second table share the footprint and will physically fit, but are a different chemistry with a different voltage, capacity and discharge curve. Confirm against your device's requirements and the marking on the cell before ordering.
Same family

Other Zn-MnO₂ cells in the range with a comparable capacity — swap only when the holder and the voltage allow it.

ModelChemistryNominal voltageTypical capacity
LR521Zn-MnO₂1.5V7mAh
LR626Zn-MnO₂1.5V13mAh
LR721Zn-MnO₂1.5V13mAh
Documents for the LR621: EU declaration of compliance TQ-EUDOC-LR621-20260701 · tested to IEC 60086-1:2021, IEC 60086-2:2021, IEC 60086-3:2021, IEC 60086-5:2021. Datasheet and declaration links are in Related documents.
Performance

How does the LR621 perform?

Approx. WeightCapacityMAD
0.28g9mAh455.0 hours
Capacity & MAD test condition: 68KΩ 24h/day to 1.2V @ 20±2℃
Approx. weight only for reference
Materials

What raw materials does the LR621 contain?

ManganeseGraphite
Safety & Compliance

Is the LR621 compliant with EU 2023/1542?

LR621 is supplied under EU Regulation 2023/1542. Each shipment carries the EU declaration of conformity (No. TQ-EUDOC-LR621-20260701), tested against IEC 60086-1:2021, IEC 60086-2:2021, IEC 60086-3:2021, IEC 60086-5:2021, and an MSDS.
CE marking
CE marking
Separate collection
Separate collection
Keep out of reach
Keep out of reach
Do not recharge
Do not recharge
Ordering

What do buyers ask before ordering the LR621?

How long does a LR621 battery last?
LR621 is rated 9mAh and runs for 455.0 hours under our published test — test conditions: 68KΩ 24h/day to 1.2V @ 20±2℃. Service life in your device depends on the load and the cut-off voltage, so send us the device and we will size the cell for it.
What is inside a LR621 battery?
The LR621 is built from Manganese, Graphite — a Zn-MnO₂ system at 1.5V, rated 9mAh, about 0.28g. The material list belongs to this model's technical file, and the MSDS for the chemistry comes with the documentation set.
What is a LR621 equivalent to?
AG1 / G1A — the same 6.8 × 2.15 mm cell at the same chemistry and voltage, so they fit and operate in the same holder. The same-size cell in the other chemistry is 364 (SR621SW) / SR621SW — it drops into the same holder but is not electrically equivalent. Each number in the table below carries the manufacturer documentation it was checked against.
How long can a LR621 be stored?
Our storage statement for the LR621 reads: One years under normal storage conditions. Keep the cells in the original packaging; the storage and transport guidance that applies to this 1.5V Zn-MnO₂ model goes out with the shipment paperwork.
Is the LR621 rechargeable?
No — the LR621 is a primary (non-rechargeable) cell. Charging a primary cell can cause leakage or rupture, so replace it rather than recharge it. If your application needs recharging, ask us for the rechargeable range.
Which documents come with a LR621 order?
Each LR621 consignment carries its own EU declaration of conformity (reference TQ-EUDOC-LR621-20260701) and an MSDS. Transport documentation is issued for the consignment as the destination market requires.
How do I order the LR621 in bulk?
Send the model, your annual quantity and the packaging format. First orders start from 50 cartons per product line, and printing on the cell, blister card and box is done in our own plant with your logo and barcode.

How do I get LR621 wholesale pricing?

Factory-direct with OEM custom label & packaging. Samples available.

Downloads

Which documents are available for the LR621?

Last updated:

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