SR44 is a silver oxide battery used in different electronic devices where power is needed for a longer period of time and in a reliable way. The main uses are calculators, medical devices, and watches since SR44 has a constant voltage output and high energy density. In this post, we will cover basic details about the SR44 battery, its features, and its main equivalent. So, let’s get started with what the SR44 battery is.
What is an SR44 battery?
- The SR44 battery is a very common part of the watch and has silver oxide chemistry. This battery is very commonly seen in small and handheld devices like calculators.
- This battery has a diameter of 116mm and a height of 5.4mm. Its nominal voltage is 1.55 volts, and its capacity range is 150 to 200 mAh.
- The main SR44 battery equivalents are LR44, AG13, SG13, and 357. The main features of the SR44 battery are its compact size and longer working life, which makes it preferred for medical devices, cameras, digital watches, etc.
What does SR mean on a battery?
- The first alphanumeric code defines battery type. LRD means alkaline battery, CR is lithium battery, and SR is silver oxide, which contains heavy metals.
SR44 Part Number
- The SR44 silver oxide battery part numbers have details for chemistry, dimensions, and uses of the battery.
- S: Is used for showing the battery silver oxide chemistry. It also provides details for the working life and steady voltage of the battery.
- R: It is used for defining that the battery is a round shape like a button or cell.
- 44: It is code that is used for showing the battery dimensions. The first digit 4 is defined in mm as 11.6 mm, and the second 4 is battery height that is mm and about 5.4 mm.
SR44 Dimensions
SR44 Battery Features
Dimensions
- The main dimensions of the SR44 battery are a diameter of 11.6 mm and a height of 5.4 mm. This battery has features of a cylindrical shape with a flat top and lower part.
VoltageÂ
- The nominal voltage of the battery is 1.55 volts, which is a constant value.
Capacity
- The capacity of the battery is 150 to 200 mAh and is best to use for lower to moderate power applications.
Chemistry
- The SR44 battery has high energy density and stable output voltage, all due to silver oxide chemistry. Its capacity and voltage stability make silver oxide batteries better than alkaline batteries.
- It has a constant output voltage and is best for powering devices where reliable and constant current is needed.
Shelf LifeÂ
- The working life of the SR44 battery is more than 5 years. These batteries also have longer-term storage features, so they are the best option for storage devices. If we store or use a battery and operating device in cool, dry conditions, its working life can increase.
Performance
- The SR44 battery is used for different conditions and temperature ranges, like 10°C and 60°C. This battery also provides good leakage resistance, so it protects devices where it is used from any damage.
Environmental Effect
- Mercury is not used in SR44 batteries, so they are environmentally friendly batteries and do not have any bad effect on the environment.
Features | Details |
Type | SR44 |
Diameter
|
11.6mm
|
Dimensions
|
11.6 x 5.4mm
|
Series | SR |
Chemistry
|
Silver Oxide
|
Nominal Voltage
|
1.55V |
Capacity
|
165mAh
|
Terminal Type
|
Standard
|
SR44 Battery Equivalent
SR44 batteries have compatibility with different types of batteries made by other brands and support their chemistry. In different applications, we can replace the equivalents of the SR44 battery since it has the same features and dimensions. The basic SR44 battery equivalents are
Silver Oxide Batteries
303/357:
- 303 and 357 are silver oxide batteries, and 303 is used for low-drain applications and 357 for high-drain. These two batteries have the same physical size and voltage as the SR44 battery.
SR44W:
- It is also a silver oxide battery, and Energizer made this battery for high-drain uses where constant power is needed.
SR44SW:
- It is a silver oxide battery used for watches to provide low-drain applications with a constant power supply.
Alkaline Batteries
LR44:
- LR44 is an alkaline chemistry battery, and it has the same size and voltage as the SR44 has. But working life is short, with voltage also being less stable.
AG13:
- AG13 batteries are also alkaline batteries, and different brands make this battery that is used as a replacement for the LR44 battery.
ZA675:Â
- It is a zinc-air battery that is used for hearing aids and comes with different chemistry as compared to the SR44 battery. It has a high energy density with air exposure and is less common for electronic devices.
Equivalent | Chemistry | Voltage | Capacity (mAh) | Applications |
LR44 | Alkaline | 1.5 | 150 | Various |
CR44 | Lithium | 3 | Varies | Watches, Cameras |
A-76 | Alkaline | 1.5 | Varies | Calculators |
PX76 | Alkaline | 1.5 | 180 | Remote Controls |
675 | Zinc-Air | 1.4 | Varies | Hearing Aids |
1166a | Zinc-Air | 1.4 | Varies | Hearing Aids |
LR44H | Alkaline | 1.5 | Varies |
Medical Instruments
|
V13GA | Alkaline | 1.5 | Varies | Hearing Aids |
357 | Silver Oxide | 1.55 | Varies | Watches, |
SR44W | Silver Oxide | 1.55 | Varies | Watches |
AG13 | Alkaline | 1.5 | 125 | Toys, Watches |
G13 | Alkaline | 1.5 | Varies | Remote Controls |
A76 | Alkaline | 1.5 | 120 | Calculators |
SR44 Battery Advantages
- The SR44 battery has a high energy-to-weight ratio with high power for high currents.
- It has low, constant inner resistance and high capacity with a longer working life.
- It is a non-rechargeable battery and has a different temperature range for working.
- It has high resistance to acceleration, shock, and vibration.
- It works well at low temperatures is stable and performs well for low internal resistance.
- Its working temperature range is about -10°C to +50°C.
SR44 Battery Applications
The main uses of the SR44 battery are in different electronic devices such as
- Hearing aids
- Cameras
- Remote controls
- Clocks
- Calculators
- Car keys
- Toys
- Cameras
- Watches
- Watches
- Calculators
- Medical instruments
SR44 battery vs. LR44 battery
Parameters | SR44 | LR44 |
Chemistry | Silver Oxide |
Alkaline
|
Cost | Â expensive |
Low cos
|
Shelf Life | Longer shelf life |
Shorter shelf life
|
Discharge Characteristics | consistent discharge rate |
 voltage drop as it discharges
|
Nominal Voltage | 1.55V | 1.5V |
Capacity | 150-175 mAh |
110-130 mAh)
|
Voltage Stability | Â stable throughout discharge |
Less stable; high losses
|
Typical Uses | Watches, medical devices calculator |
Toys, remote controls, small electronics
|
- The physical dimensions for both batteries are the same, and the LR44 battery has a lower terminal voltage as compared to the SR44 battery.
- If the SR44 battery is replaced with an LR44, the devices can work normally and not have any bad effect. But SR44 is best in some features. The LR44 battery is an alkaline battery, and the SR44 is a silver oxide battery.
- Silver oxide batteries have good performance since they have about fifty to one hundred percent higher capacity as compared to alkaline batteries and have a longer working life.
- The high power of the silver oxide battery reduces for a slower rate.
- The battery that has silver oxide is denoted with the letter S, and the zinc battery is denoted with the letter L. The electrochemical features of L and S are the same.
- The equivalents of LR44 alkaline batteries are L1154, G13, AG13, A76, LR1154, and 157.
- The SR44 battery equivalents are SR44W, SR44SW, SRSW, 303, 357, SR44W, and SR44SW.
Which One is Better, SR44 or LR44?
- It is not easy to select SR44 and LR44 for their uses, but based on some features, silver oxide batteries are better as compared to alkaline. So SR44 is a better option than LR44. Because a battery with silver oxide chemistry has a capacity higher as compared to an alkaline battery.
- The working life of the SR44 is longer as compared to the LR44 since it has a high capacity, and silver oxide battery voltage losses are low. The low cost of LR44 batteries makes them suitable for some applications.
Silver Oxide Batteries vs. Alkaline Batteries
- The silver oxide battery has high energy density and high current for applications. This battery works longer as compared to an alkaline battery. So there is no need for charging batteries.
- Alkaline batteries are used for watch batteries. Since their working life is shorter than silver oxide batteries but not much less. They are low-cost batteries, but their limitation is that they can cause leaks and result in the corrosion and damage of your device where it is connected.
Are LR44 and SR44 interchangeable?
- Both SR4 and LR4 have the same dimensions, but the terminal voltage of SR batteries is higher, and the capacity is also high. Different devices operated with LR44 batteries. But also work with SR44.
- The LR44 battery has the same size but different chemistry for silver oxide button cells like SR44SW, 303, SR44, and 357.
- These batteries can be used in each other’s places, but use batteries based on applications requirements for avoiding any damage.
 Battery Chemistries Comparison
Chemistry | Alkaline | Silver-Oxide | Zinc Air |
Mercury-Oxide
|
Nominal Voltage | 1.5V | 1.55V | 1.4-1.45V | 1.35V |
Labels | LR44, 76A, AG13, LR1154, A76, L1154 | SR44W, SR44, AG13, S76, A76, SR1154, SR44SW, 157, 357, 303, SG13, | 675, Blue Tab, ZA675, PR44, 7003ZD |
MR44, MR1154
|
 Capacity | 110-130 mAh | 150-200 mAh | 600-700 mAh |
180-200 mAh
|
 Voltage | 1.0V | 1.2V | 1.05-1.1V | 1.1V |
Features | Voltage drops over time | Very constant voltage | Â large capacity;Slightly lower voltage mostly used as hearing aid batteries |
lower voltage, contains mercury; not used commonly |
Summary: SR44 Battery Equivalent
The main uses of SR44 batteries are in small electronic devices like watches, calculators, etc. It provides stable voltage and has a longer working life with a compact size. Its main equivalent batteries are LR44, 357, and A76. It has constant performance and a longer working life for devices where used. Now the SR44 battery is considered the main power component for small devices that operate at a constant voltage.
FAQs
Is SR44 like LR44?
- The main types of silver oxide batteries are LR44 and SR44. LR44 has a high capacity and low voltage compared to SR44.
Are LR44 and SR44 batteries interchangeable?
- No, we cannot use them as replacements. Silver oxide batteries have good performance as compared to LR44 alkaline batteries. But voltage and physical dimension are the same.
Are SR44 and A76 batteries the same?
- Yes, both are the same. SR44 and A76 batteries are the same type. SR44 and A76 are known as 1.5-volt button cell batteries that have the same physical dimensions. The LR44 battery equivalents are SR44 and A76. Both batteries are used interchangeably in devices such as watches, calculators, and other devices.
What are the main disadvantages of silver oxide batteries?
- Silver oxide batteries have stable voltage, so they are used for watches and other small devices, but they have corrosion on them, and that is the result of the high basicity of the electrolyte solution. The corrosion has a bad effect on battery maintenance with time and capacity. Silver oxide batteries have a high cost and a limited working life.
What is the capacity of the SR44 battery?
- The capacity of an SR44 battery is about 150 mAh. But SR44 battery capacity can be different based on brand.
What are the 5 applications of batteries?
- wall clocks, flashlights, hearing aids, remote controls, torches, weight scales
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