As is well known, the SR621SW battery with silver oxide is the best choice for watch devices. It offers reliable performance in a compact size. This power source is used for Replacing the battery in a Casio watch.
What are the characteristics of the SR621SW battery?
This energy source has a round shape and is galvanicSometimes called a button or a tablet, it uses silver oxide to operate. Back in the distant Soviet Union, these batteries were called silver-zinc batteries. They were then designated as SC-0.015.
Energy in the SR621SW battery is produced through a chemical reaction where Zn and Ag2O are exchanged in an alkaline electrolyte. This results in electrical energy being generated.
The table below shows the main parameters of the sr621sw.
| Parameter name | Data |
| Shelf life | About 10 years. |
| Voltage | 1.55 v |
| Capacity | 20-25 mAh |
| Countries of origin | Russia, China, Switzerland, Japan, Great Britain. |
| Weight | 0.32 g |
| Self-discharge | No more than 5% per year at a temperature of 20 degrees. |
| Withstands temperatures | From -10 to +60 |
| Diameter | 6.8 mm |
| Height | 2.15 mm |
Analogues of the SR621SW battery
A number of similar elements are identified:
- SR621W – power is significantly less than the original.
- SR-60 alkaline or silver oxide.
- SC – 60
- 364(31),
- T (manufacturer Timex),
- SW621,
- 602 (Bulova).
- GP364,
- SB-AG/DG,
- SR621W,
- 364 (D364),
- SB-BW,
- 280-34,
- 364/363,
- SR621PW,
- V364(531),
- 280-70,
- LR60/621,
- LR60,
- LR621,
- RW 320
- SB-AG,
- AG1,
- AG1/364A,
- AG-1.
This way, you can successfully replace it with one of these batteries. The main thing is that the dimensions and voltage match.
Manufacturers
These batteries are manufactured by various companies, but the most common ones are those listed below.
- Maxell
- Varta
- GP
- Sony SR621SW battery
- Seiko
- Citizen
- Panasonic
- Energizer
- Rayovac
- Camelion
- Renata
- Duracell
Where is it used?
SR621SW batteries are used in a variety of electronic equipment. Below are the main applications:
- Watch.
- Laser pointers
- Remote controls for TV.
- Medical equipment.
- Alarm key fobs.
- Tomogochi toys and others.
- Calculators.
But this is not a complete list of devices. In reality, their application area is very broad.
Lights for buyers
Sometimes you might receive a defective SR621SW battery. Therefore, it's a good idea to know what to look for before purchasing.
List of recommendations:
- Take batteries from a reputable brand or battery company that you have already purchased from.
- It's important to know that the longer the battery's lifespan, the less charge it has left. Avoid buying batteries that are 5 or 10 years old.
- Look at the packaging; it should be free of visible damage. The battery should be tightly sealed.
- The writing on the box should be clear and not blurry. Blurred printing is a sign of a counterfeit.
Thus, by following these tips, you will purchase a high-quality and long-lasting SR621SW battery.
Is it possible to do charging?
Like any other battery, the SR621SW cannot be recharged. Manufacturers don't produce batteries of this size because they don't consider it necessary. This is because they last a long time and are inexpensive. The processes that occur in this energy source are irreversible.
When the voltage drops to 1.4 volts, the alkaline electrolyte begins to destroy the separator. As a result, the corrosion process accelerates, and the accumulated gases begin to escape more rapidly. Furthermore, the pressure increases, potentially causing an electrolyte spill.
The destruction process occurs on its own, and if a charging current is supplied from outside, then chemical leakage is guaranteed.
Recharging the SR621SW battery and inserting it into the watch can easily cause the battery to leak and damage the metal contacts. In the worst case, this could render the device inoperable. Also, avoid leaving the device in direct sunlight—this can damage the battery and cause it to leak.
Therefore, when the SR621SW battery runs out, it is better to replace it with a new element, especially since it can work for several years in a row.
