Contents
What is SR621SW Battery?
Coin cell batteries like the SR621SW are frequently seen in tiny electrical gadgets. Because they provide a more consistent voltage and longer shelf life than alkaline batteries, silver oxide batteries—like the SR621SW—are well-liked. This makes them perfect for delicate electronic equipment that need a steady power source.
Specifications of SR621SW Battery
– Type: Silver oxide
– Voltage: 1.55V
– Diameter: 6.8 mm
– Height: 2.1 mm
– Capacity: Approximately 20-25 mAh
– Chemistry: Silver oxide (Ag2O)
Common Applications and Devices of SR621SW Battery
1. Watches: Because it is compact and offers dependable power, it is typically utilized in wristwatches and other devices.
2. Hearing Aids: Hearing aids frequently use the SR621SW battery due to its small size and stable voltage.
3. Calculators: Many small electronic calculators use this type of battery.
4. Medical Devices: It can be found in medical devices like blood glucose meters.
5. Toys: Some small electronic toys use SR621SW batteries.
6. Remote Controls: Used in small remote controls and key fobs.
Top Alternatives for SR621SW Battery
1. Energizer 364
– Specifications:
– Voltage: 1.55V
– Chemistry: Silver Oxide
– Capacity: Approximately 15 mAh
– Dimensions: Diameter 6.8 mm, Height 2.6 mm
– Compatibility: Commonly used in watches, calculators, and small electronic devices.
2. Maxell SR621SW
– Specifications:
– Voltage: 1.55V
– Chemistry: Silver Oxide
– Capacity: Approximately 18 mAh
– Dimensions: Diameter 6.8 mm, Height 2.6 mm
– Compatibility: Similar to the Energizer 364, suitable for watches and electronic devices.
3. Renata CR621
– Specifications:
– Voltage: 1.55V
– Chemistry: Silver Oxide
– Capacity: Approximately 18 mAh
– Dimensions: Diameter 6.8 mm, Height 2.6 mm
– Compatibility: Fits devices that require SR621SW or equivalent batteries.
4. Sony SR621W
– Specifications:
– Voltage: 1.55V
– Chemistry: Silver Oxide
– Capacity: Approximately 18 mAh
– Dimensions: Diameter 6.8 mm, Height 2.6 mm
– Compatibility: Suitable for use in watches and other small electronics that use SR621SW.
Other Notable Alternatives
– Panasonic SR621SW: Similar specifications and compatibility as the others mentioned.
– Duracell 364/363: Another equivalent option with similar dimensions and voltage.
– Varta V364: Matches the size and voltage, suitable for similar applications.
Compatibility Guide of SR621SW Battery Equivalent
1. Check Compatibility with Your Device
– Consult the Device Manual: Examining the manufacturer’s specs or the gadget handbook is the best method to determine compatibility. The varieties of suitable batteries are often described in the instructions.
– Check Existing Battery: Check the battery type labeled on the old battery or within the battery compartment of the device if you are changing the battery.
– Device Markings: Certain gadgets feature labels or indicators indicating the kind or capacity of the battery.
2. Key Factors to Consider
– Voltage: Verify that the replacement battery has the same 1.55V voltage as the SR621SW. Changing the battery voltage could harm the device or have an impact on performance.
– Size: Check the dimensions of the replacement battery. The SR621SW typically has a diameter of 6.8 mm and a height of 2.6 mm. Make sure the alternative battery matches these dimensions to fit properly in the battery compartment.
– Chemistry: The SR621SW uses Silver Oxide chemistry. While different varieties of silver oxide batteries can frequently be used in place of silver oxide batteries, care should be taken when using other chemicals like alkaline or lithium batteries. because they might behave differently.
3. Additional Considerations
– Capacity: As long as capacity—which is expressed in milliamp hours, or mAh—stays within a tolerable range for the requirements of the device, minor variations in capacity often have little effect on compatibility.
– Brand Variability: These batteries should function in your device as long as the voltage, size, and chemistry match. Performance and lifetime may differ slightly between brands.
How to Choose the Right Replacement
Factors to Consider
1. Battery Life
– Capacity: Higher capacity (measured in mAh) generally means longer battery life, but for small batteries like the SR621SW, this difference might be minimal. Check the manufacturer’s specifications for estimated battery life.
– Usage: Consider how frequently you use the device. If it’s used heavily, opting for a battery with a reliable lifespan is crucial.
2. Brand Reputation
– Reliability: Energizer, Maxell, and Sony are well-known brands that are recognized for their dependable battery production. Their products typically undergo rigorous quality control.
– Reviews: Look for reviews or ratings of the battery brand and model. Positive reviews left by previous customers may be a reliable indicator of their dependability and efficacy.
3. Cost
– Budget: Even though it could be tempting to choose the least expensive alternative, keep in mind that really inexpensive batteries could not be as high-quality or last as long. Weigh the cost against the brand reputation and battery life.
– Bulk Buying: If you use the battery type frequently, consider buying in bulk to reduce the per-unit cost. Just ensure that you can use them before they expire.
Tips for Purchasing and Storing Batteries
1. Purchasing Tips
– Compatibility: Make sure the replacement battery matches the original battery’s voltage, size, and chemistry by carefully reading the specs twice.
– Source: To avoid fake goods, purchase from a reliable merchant or straight from the source.
– Expiration Date: Verify the battery package’s expiration date.
2. Storing Batteries
– Cool and Dry Place: Batteries should be kept dry and cool to avoid degradation. Steer clear of extremely high or low humidity levels.
– Avoid Direct Contact: Batteries should not be near metal things that can spark a short circuit. Store in original packaging if at all possible.
– Regular Checks: Make sure to regularly check storage batteries for corrosion or leaks, and dispose of any damaged batteries appropriately.
