By SR626SW Battery 199
Replacement Options for SR626SW Battery
Applications of SR626SW Battery
Steps to Remove and Install an SR626SW Battery
Proper Storage Methods for SR626SW Battery
Safety Notes When Using SR626SW Battery
The SR626SW is a widely used silver oxide button cell. It is known for its stable voltage and long lifespan. It usually powers small and low-power electronic devices. As a key power source, this battery helps devices run stably for a long time.
You can clearly understand the technical data of the SR626SW battery from the table below:
| Parameter | Specification |
| Chemical system | Silver oxide |
| Nominal voltage | 1.55 volts |
| Standard capacity | About 26 milliampere-hours (mAh) |
| Operating temperature range | -10°C to +60°C |
From a data visualization view, if we compare the 26mAh capacity of the SR626SW with an alkaline battery of the same size, its energy density is about 30% higher. A bar chart would show a clear height difference.
Silver oxide batteries provide very stable voltage during the discharge cycle. This is important for devices that need accurate timing, such as watches. Unlike alkaline batteries, which drop voltage over time, the SR626SW keeps a nearly flat voltage output until it is almost empty.
The SR626SW offers higher energy density in the same size. It has about 30% more energy density than an alkaline battery. In charts, this looks like a much higher bar and gives a longer lifespan.
The yearly self-discharge rate is less than 2% at room temperature. This means it keeps over 98% of its power after one year of storage. In comparison, alkaline button cells often lose 5-10% per year. This is the first clear advantage.
The SR626SW works based on a chemical reaction between silver oxide and zinc. Modern products meet mercury-free environmental standards. The chemical efficiency reaches over 90%, which is much higher than the 60-70% of alkaline batteries. This is the second advantage.
The SR626SW has many equivalent models with the same size and voltage:
| Feature | SR626SW (Silver oxide) | Alkaline equivalent |
| Nominal voltage | 1.55V | 1.5V |
| Average lifespan | 24-36 months | 12-18 months |
| Voltage stability | Stable over life | Drops slowly |
| Cost | Higher | Lower |
From the lifespan view, the SR626SW lasts 1.5-2 times longer than an alkaline battery. In a scatter plot, this difference shows as clearly separate data clusters. This is the third advantage.
The SR626SW battery is widely used in the following areas:
| Application | Typical Devices | Share |
| Timekeeping devices | Quartz watches, digital watches | 40% |
| Calculating tools | Small pocket calculators | 25% |
| Medical devices | Hearing aids, glucose meters, thermometers | 15% |
| Other devices | Laser pointers, keychain lights, small remote controls | 20% |
In a pie chart, watches take the largest share, showing its importance in precision timing.
Test data shows that under 25°C and 50% humidity, the yearly capacity loss is only 2%. Under high temperature and humidity (35°C and 80%), the loss can reach 8%. This shows the importance of proper storage.
Studies show that over 90% of battery accidents come from misuse, such as:
The correct way is to dispose of used batteries as hazardous waste for professional treatment to avoid pollution. By following these rules, users can safely and efficiently use the SR626SW battery and enjoy its performance advantages.
It is not advisable to interchange the Sony SR621SW and SR626SW batteries. While their diameters are identical, the SR626SW has a greater height, making them dimensionally and specificationally distinct.
The SR626SW button cell battery has a variety of equivalent model numbers, including 377, AG4, SR66, V377, D377, GS4, SB-AW, 177, and 377A. Despite the different designations, which may vary by manufacturer or geographic market, all these batteries share identical dimensions (6.8mm in diameter and 2.6mm in height) and have comparable technical specifications.
AG4 and button cell battery SR626SW are not identical, despite having identical physical dimensions of 6.8 mm in diameter and 2.6 mm in height. The SR626SW provides a more stable voltage output and a higher capacity, typically ranging from 25 to 30 mAh, whereas the AG4 has a lower capacity, usually between 17 and 22 mAh.
The operational life of an SR626SW button cell battery is typically one to three years. This duration is determined by factors including the power consumption of the device, the quality of the battery, and its operating conditions.