Description
The ITTA SR621SW 364 1.55V Silver Oxide Watch Battery provides power for compatible quartz watches and precision electronic devices.
Each pack includes five non-rechargeable silver-oxide button cells. Additionally, the compact SR621SW format suits compatible watch movements requiring a 364 battery.
Silver-oxide chemistry generally maintains a relatively stable voltage during discharge. Therefore, manufacturers commonly use this battery type in precision timekeeping applications.
Key Features
- 1.55V Nominal Voltage: Supports compatible quartz watch movements and low-drain devices.
- Silver Oxide Chemistry: Provides relatively stable voltage during normal discharge.
- SR621SW / 364 Format: Matches devices specifying this battery model.
- Compact Size: Approximately 6.8mm diameter and 2.15mm height.
- Non-Rechargeable: Uses primary battery chemistry and must not be recharged.
- Pack of Five: Includes five individual watch batteries.
- Blister Packaging: Protects and separates the cells before use.
Technical Specifications
| Specification | Details |
|---|---|
| Brand | ITTA |
| Model | SR621SW / 364 |
| Battery Chemistry | Silver Oxide |
| Nominal Voltage | 1.55V |
| Battery Type | Primary Button Cell |
| Approximate Diameter | 6.8mm |
| Approximate Height | 2.15mm |
| Rechargeable | No |
| Pack Quantity | 5 Batteries |
| Packaging | Blister Strip |
Dimensions represent the standard SR621SW battery format. Refer to your watch manufacturer’s specification for compatibility.
Common Applications
ITTA SR621SW / 364 batteries may suit compatible:
- Quartz wristwatches
- Analog watch movements
- Small precision electronic devices
- Other equipment specifically requiring an SR621SW or 364 battery
However, not all watches use the same battery size. Always inspect the original battery marking or consult your watch’s service manual.
SR621SW vs 364 Battery
SR621SW and 364 commonly identify the same silver-oxide button-cell format.
Both designations generally refer to a 1.55V battery measuring approximately 6.8mm in diameter and 2.15mm in height.
Consequently, customers may encounter either designation while searching for a watch battery replacement.
Nevertheless, always confirm the original model before ordering.
SR621SW vs SR626SW: What’s the Difference?
Although both batteries have similar diameters and use silver-oxide chemistry, they differ in height.
SR621SW / 364
- Diameter: Approximately 6.8mm
- Height: Approximately 2.15mm
- Nominal Voltage: 1.55V
SR626SW / 377
- Diameter: Approximately 6.8mm
- Height: Approximately 2.6mm
- Nominal Voltage: 1.55V
Therefore, these batteries are not automatically interchangeable.
For example, a different battery height may affect contact pressure inside a watch movement. Always follow the manufacturer’s specification.
SR621SW vs SR920SW
The SR621SW and SR920SW batteries have different physical dimensions.
SR621SW measures approximately 6.8mm in diameter and 2.15mm in height.
In comparison, SR920SW measures approximately 9.5mm in diameter and 2.05mm in height.
As a result, these battery sizes should not be treated as direct replacements.
Silver Oxide vs Alkaline Watch Batteries
Silver-oxide batteries generally provide a more stable voltage profile throughout discharge than comparable alkaline button cells.
Moreover, their characteristics make them suitable for many compatible quartz watch movements.
However, battery size alone does not confirm electrical compatibility.
For reliable operation, choose the battery chemistry and model recommended by the device manufacturer.
How to Replace an SR621SW Watch Battery
- Confirm that your watch requires SR621SW or 364.
- Open the watch case using suitable watchmaking tools.
- Identify the original battery’s polarity and position.
- Remove the exhausted battery carefully.
- Install the new cell with the correct polarity.
- Close the case and confirm normal watch operation.
For delicate or water-resistant watches, consider professional battery replacement to help preserve the case seals and avoid movement damage.
Important Battery Safety Instructions
- Never recharge these primary silver-oxide batteries.
- Avoid short-circuiting the terminals.
- Do not crush, puncture, dismantle or expose cells to fire.
- Keep new and used batteries out of children’s reach.
- Store unused batteries securely in the original packaging.
- Remove exhausted batteries promptly.
- Follow applicable local battery disposal guidelines.
Warning: Button batteries can cause severe internal injuries if swallowed. Seek emergency medical care immediately if ingestion is suspected.
Frequently Asked Questions
What is the voltage of the ITTA SR621SW battery?
Each cell has a nominal voltage of 1.55V.
Is SR621SW the same as 364?
These names commonly refer to the same silver-oxide battery format. However, always check the device manufacturer’s battery requirement.
How many batteries are included?
Each pack contains five ITTA SR621SW / 364 silver-oxide cells.
Are these batteries rechargeable?
No. They are non-rechargeable primary batteries.
Can I replace SR626SW with SR621SW?
Not automatically. The two battery formats have different heights. Use the model specified by your watch manufacturer.
Can I use SR621SW instead of SR920SW?
No. These batteries differ significantly in diameter and should not be considered direct replacements.
Is SR621SW a lithium battery?
No. It is a 1.55V silver-oxide battery.
Buy ITTA SR621SW 364 Watch Batteries Online at ArcEin
Purchase the ITTA SR621SW 364 1.55V Silver Oxide Watch Battery – Pack of 5 from ArcEin for just ₹65.
Each blister strip contains five button-cell batteries for compatible quartz watches and electronic devices.
ArcEin offers secure online payment options and delivery to serviceable locations across India.
For bulk enquiries or battery identification assistance, contact contactus@arcein.in.
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