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The LR41 battery is widely used in watches, thermometers, calculators, toys, and other small electronic devices.
When an LR41 battery needs replacement, you may wonder whether batteries such as 377, 392, 357, CR2032, LR44, or SR41 are the same and interchangeable.
Although some batteries share similar dimensions or voltage ratings, they differ in size, chemistry, capacity, and performance. Using the wrong replacement affect device operation or battery life.
In this guide, we'll compare LR41 with 377, 392, 357, CR2032, LR44, and SR41 batteries, explain their key differences, and help you choose the correct replacement for your device.
An LR41 battery is a small 1.5-volt alkaline button cell battery in compact electronic devices.
It provides reliable power for low-drain applications such as digital thermometers, watches, laser pointers, calculators, toys, and medical devices.
Due to its small size and wide availability, the LR41 is one of the most common button batteries in consumer electronics.
The LR41 battery typically measures 7.9 mm in diameter and 3.6 mm in height. It belongs to the LR736 battery series and it has several equivalent model names depending on the manufacturer.
While the LR41 uses alkaline chemistry, silver oxide versions with similar dimensions, such as the SR41, are also available and often provide longer service life and more stable voltage output.
Before replacing an LR41 battery, it is important to verify the battery size, voltage, and chemistry recommended by the device manufacturer.
Although some batteries may appear similar, not all button cells are directly interchangeable.
| Specification | LR41 Battery |
|---|---|
| Battery Type | Button Cell / Coin Cell |
| IEC Designation | LR736 |
| Nominal Voltage | 1.5V |
| Chemistry | Alkaline Manganese Dioxide |
| Diameter | 7.9 mm |
| Height | 3.6 mm |
| Typical Capacity | 25–45 mAh |
| Operating Temperature | -10°C to 60°C (varies by brand) |
| Weight | Approximately 0.6 g |
| Rechargeable | No |
| Shelf Life | Up to 3 years (varies by storage conditions) |
| Common Applications | Watches, Calculators, Remote Controls, Digital Thermometers, Medical Instruments, Toys, Laser Pointers, Small LED Flashlights |
The 377 battery and the LR41 battery are similar in size, but they are not exactly the same.
Both batteries have a diameter of approximately 7.9 mm and a height of about 3.6 mm, allowing them to fit into the same battery compartments.
However, they use different chemistries and offer different performance characteristics.
| Feature | LR41 | 377 |
|---|---|---|
| Chemistry | Alkaline | Silver Oxide |
| Nominal Voltage | 1.5V | 1.55V |
| Diameter | 7.9 mm | 7.9 mm |
| Height | 3.6 mm | 3.6 mm |
| Capacity | Lower | Higher |
| Voltage Stability | Good | Excellent |
| Typical Cost | Lower | Higher |
Yes. In most cases, a 377 battery can replace an LR41 because the two batteries share nearly identical dimensions.
The slightly higher voltage of the 377 battery is generally safe for devices using LR41 batteries.
In fact, many users choose a 377 battery because it usually lasts longer and maintains a more consistent voltage during discharge.
However, you should always check the device manufacturer's recommendations before replacing an LR41 with a 377 battery, especially in sensitive electronic or medical devices.
No, the LR41 battery is not the same as a 392 battery.
Although both are small button cell batteries, they have different dimensions and are suitable for different applications. Due to their size differences, they are generally not interchangeable.
The LR41 is an alkaline button cell battery and measures approximately 7.9 mm in diameter and 3.6 mm in height.
In contrast, the 392 is a silver oxide battery with a diameter of approximately 7.9 mm, but is significantly thinner, with a height of approximately 3.1 mm.
The difference in thickness can prevent proper contact inside the battery compartment.
| Feature | LR41 | 392 |
|---|---|---|
| Chemistry | Alkaline | Silver Oxide |
| Nominal Voltage | 1.5V | 1.55V |
| Diameter | 7.9 mm | 7.9 mm |
| Height | 3.6 mm | 3.1 mm |
| Capacity | Lower | Higher |
| Common IEC Code | LR736 | SR41W / SR736 |
| Direct Replacement | No | No |
In most cases, a 392 battery cannot directly replace an LR41.
While the diameter is the same, 392 is thinner and may not fit securely in devices using an LR41. This can lead to poor electrical contact, intermittent operation, or failure to power the device.
If your device requires an LR41 battery, it is best to use an LR41 or a compatible equivalent with matching dimensions.
Always check the battery specifications or the device manual before choosing a replacement.
No, the 357 battery is not the same as the LR41 battery. Although both are button cell batteries and share a similar diameter, they differ in chemistry, thickness, and capacity.
These differences mean they are not direct replacements in most devices. The LR41 is an alkaline battery and measures approximately 7.9 mm in diameter and 3.6 mm in height.
The 357 is a silver oxide battery with a diameter of about 11.6 mm and a height of 5.4 mm. Because the 357 is significantly larger, it will not fit into devices using an LR41 battery.
| Feature | LR41 | 357 |
|---|---|---|
| Chemistry | Alkaline | Silver Oxide |
| Nominal Voltage | 1.5V | 1.55V |
| Diameter | 7.9 mm | 11.6 mm |
| Height | 3.6 mm | 5.4 mm |
| Typical Capacity | 25–45 mAh | 150–180 mAh |
| Common IEC Code | LR736 | SR44W / SR44 |
| Direct Replacement | No | No |
No. A 357 battery cannot directly replace an LR41 because it is much larger in both diameter and height.
Even though the voltage is similar, the physical size difference prevents it from fitting into the battery compartment of an LR41-powered device.
If you need a replacement for an LR41 battery, choose a battery with matching dimensions, such as an LR41, AG3, LR736, or an equivalent SR41 silver oxide battery.
Always verify the battery specifications recommended by the device manufacturer before making a replacement.
No, the LR41 battery is not the same as a CR2032 battery. These two button cell batteries differ significantly in size, voltage, chemistry, and capacity.
As a result, they are not interchangeable and should not be used as direct replacements for each other.
The LR41 is a small 1.5V alkaline button cell in watches, thermometers, laser pointers, and other compact devices.
The CR2032 is a larger 3V lithium coin cell battery in car key fobs, computer motherboards, calculators, fitness devices, and electronic scales.
| Feature | LR41 | CR2032 |
|---|---|---|
| Chemistry | Alkaline | Lithium |
| Nominal Voltage | 1.5V | 3V |
| Diameter | 7.9 mm | 20.0 mm |
| Height | 3.6 mm | 3.2 mm |
| Typical Capacity | 25–45 mAh | 200–240 mAh |
| Common Uses | Watches, thermometers, toys | Key fobs, motherboards, scales |
| Direct Replacement | No | No |
Different Size – The CR2032 is much larger in diameter than the LR41 and will not fit into an LR41 battery compartment.
Different Voltage – The CR2032 provides 3V, which is double the voltage of an LR41. Installing a CR2032 in a device using an LR41 could damage sensitive electronic components.
If your device uses an LR41 battery, choose a replacement with the same size and similar specifications, such as an LR41, AG3, LR736, SR41, or a compatible silver oxide equivalent.
Always check the device manual or the original battery markings before replacing the battery.
In short, the LR41 and CR2032 are completely different batteries and should not be used interchangeably.
No, you generally cannot replace an LR41 battery with an LR44 battery. Although both are 1.5V alkaline button cell batteries, they differ significantly in size.
Due to their size difference, an LR44 will not fit into most devices using an LR41 battery.
The LR41 measures approximately 7.9 mm in diameter and 3.6 mm in height, while the LR44 is much larger, measuring about 11.6 mm in diameter and 5.4 mm in height.
The larger size gives the LR44 a higher capacity and longer runtime, but it also prevents direct interchangeability.
| Feature | LR41 | LR44 |
|---|---|---|
| Chemistry | Alkaline | Alkaline |
| Nominal Voltage | 1.5V | 1.5V |
| Diameter | 7.9 mm | 11.6 mm |
| Height | 3.6 mm | 5.4 mm |
| Typical Capacity | 25–45 mAh | 110–150 mAh |
| Common IEC Code | LR736 | LR1154 |
| Direct Replacement | No | No |
Different Physical Size: The LR44 is significantly wider and thicker than the LR41. In most cases, it simply will not fit into the battery compartment.
Different Device Design: Devices using LR41 batteries are designed for a specific battery size. Using a larger battery prevent the battery cover from closing or may damage the battery holder.
Capacity Is Not the Issue: Although the LR44 offers a higher capacity and longer battery life, compatibility depends on both electrical specifications and physical dimensions.
If you need a replacement for an LR41 battery, look for batteries with the same dimensions, such as LR41, AG3, LR736, L736, 192, or SR41 (silver oxide equivalent).
Always verify the battery size and model number recommended by the device manufacturer before installing a replacement.
An LR44 and an LR41 have the same nominal voltage, but their sizes are completely different. Therefore, an LR44 is not a suitable replacement for an LR41 battery.
Yes. In most cases, you can use an SR41 battery instead of an LR41 battery. The two batteries have nearly identical dimensions, allowing them to fit into the same battery compartment.
In fact, the SR41 is an upgraded replacement because it uses silver oxide chemistry, which typically provides better performance and a longer service life.
The main difference is the battery chemistry. The LR41 is an alkaline battery with a nominal voltage of 1.5V, while the SR41 is a silver oxide battery with a nominal voltage of 1.55V.
However, the small voltage difference is usually not a problem for most devices.
| Feature | LR41 | SR41 |
|---|---|---|
| Chemistry | Alkaline | Silver Oxide |
| Nominal Voltage | 1.5V | 1.55V |
| Diameter | 7.9 mm | 7.9 mm |
| Height | 3.6 mm | 3.6 mm |
| Capacity | Lower | Higher |
| Voltage Stability | Good | Excellent |
| Service Life | Shorter | Longer |
| Direct Replacement | Yes | Yes |
Longer Battery Life: Silver oxide batteries generally have a higher capacity than alkaline batteries of the same size, allowing them to power devices for a longer period.
More Stable Voltage Output: An SR41 maintains a more consistent voltage throughout its discharge cycle; especially useful for watches, medical devices, and other electronics.
Better Performance in Precision Devices: Many manufacturers recommend silver oxide batteries for devices needing accurate and reliable operation.
An SR41 is a Good Choice For: watches, digital thermometers, medical instruments, calculators, and small electronic devices requiring steady voltage.
In most applications, an SR41 can safely replace an LR41. Because it offers longer life and more stable voltage, many users prefer the SR41 as a premium replacement for the LR41 battery.
The LR41 battery has several equivalents depending on size, chemistry, and manufacturer naming.
However, not all listed batteries are truly interchangeable. Some match in size, while others only share similar voltage or are completely different.
| Battery Type | LR41 | SR41 (392/384 group in some systems) |
|---|---|---|
| Chemistry | Alkaline | Silver Oxide |
| Voltage | 1.5V | 1.55V |
| Size (Diameter × Height, mm) | 7.9 × 3.6 | 7.9 × 3.6 |
| Can Replace LR41? | ✔ | ✔ |
| Notes | Standard reference battery | Best upgrade replacement (longer life) |
| Battery Type | 377 | 392 |
|---|---|---|
| Chemistry | Silver Oxide | Silver Oxide |
| Voltage | 1.55V | 1.55V |
| Size (Diameter × Height, mm) | 7.9 × 3.6 | 7.9 × 3.1 |
| Can Replace LR41? | ✔ (in most cases) | Sometimes |
| Notes | Same size, stable voltage | Loose contact due to thinner height |
| Battery Type | AG3 / LR736 / 192 | LR44 |
|---|---|---|
| Chemistry | Alkaline | Alkaline |
| Voltage | 1.5V | 1.5V |
| Size (Diameter × Height, mm) | 7.9 × 3.6 | 11.6 × 5.4 |
| Can Replace LR41? | ✔ | ❌ |
| Notes | Common LR41 naming equivalents | Same voltage but physically larger |
| Battery Type | 357 | CR2032 |
|---|---|---|
| Chemistry | Silver Oxide | Lithium |
| Voltage | 1.55V | 3V |
| Size (Diameter × Height, mm) | 11.6 × 5.4 | 20.0 × 3.2 |
| Can Replace LR41? | ❌ | ❌ |
| Notes | Not compatible due to size difference | Different voltage + size |
Choosing the right LR41 replacement is important because even small differences in size, voltage, or chemistry can affect device operation.
Many button cell batteries look similar, but they are not always interchangeable. When replacing an LR41 battery, follow these steps:
Check the Device Manual: Look for the exact battery code recommended by the manufacturer.
Match Size and Voltage: Ensure the replacement has the same diameter, height, and voltage (1.5V).
Consider Battery Chemistry:
Buy From Trusted Brands: Choose reputable brands like Energizer, Duracell, Maxell, or Renata.
Avoid Mixing Old and New Batteries: Always replace all batteries in a device at the same time.
Using the wrong size battery (e.g., LR44 instead of LR41)
Ignoring thickness differences can cause poor contact or device failure even if the battery diameter matches.
Mixing alkaline and silver oxide batteries can lead to unstable performance and shorter battery life.
Matching voltage only is incorrect because physical size is just as important as electrical rating.
Forcing a battery into the slot can damage the holder and permanently affect device operation.
Using low-quality or unknown brands may result in leakage, weak power output, or early failure.
Not checking the device manual can lead to selecting an incompatible or incorrect replacement battery.
The LR41 battery is a 1.5V button cell, but it is often confused with other batteries like 377, 392, 357, CR2032, LR44, and SR41.
In general, SR41 and 377 silver oxide batteries are the best replacements, while batteries like LR44, 357, and CR2032 should never be directly replaced.
Choosing the correct LR41 replacement ensures proper device performance, longer battery life, and prevents potential damage caused by incorrect battery selection.
An LR41 battery can directly replace any coin cell with the same 7.9mm x 3.6mm dimensions, including LR44, 392A, AG3, 192, 92A, LR736, and SR41.
No, an Energizer 377 is not exactly the same as an LR41. Energizer 377 (SR66, 6.8×2.6mm, 1.55V silver oxide) and LR41 (7.9×3.6mm, 1.5V alkaline) differ slightly in size, chemistry, and capacity.
No, Energizer 357 (also known as SR44) and LR41 are not the same battery. They differ significantly in physical size and chemistry.
LR41 is also known as AG3, 392, 192, LR736, L736, 384, V36A, or SR41, depending on the brand and region.
The Duracell equivalent for the LR41 battery is the D384/D392 (often sold as the Duracell 384/392) and Duracell 192 (also sold as D192, DL41, or DA41).
No, Duracell 377 is not the same as LR41. Duracell 377 (6.8×2.6mm, 1.55V silver oxide) and LR41 (7.9×3.6mm, 1.5V alkaline) are completely different in size and chemistry.
The Energizer equivalent to an LR41 battery is the Energizer 392/384 (also sold as 392A or E392).
LR41 batteries typically last 3 to 6 months in devices like thermometers and laser pointers. Unused, stored batteries have a shelf life of 2 to 5 years.
Yes, LR41 is a specific, standardized battery size. It refers to a small 1.5-volt alkaline button or coin cell in compact devices like digital thermometers, laser pointers, watches, and small toys.
Locate the battery compartment on your device, remove the cover, and insert the battery. Ensure the positive (+) and negative (-) side are in proper contact with the contacts. Finally, secure the cover tightly.
Yes, the Energizer 392 is functionally interchangeable with an LR41 battery. However, there is a key difference in their chemistry.
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