L736 Battery Equivalent: Compatible Alternatives You Should Know

24 November 2025
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What is an L736 Battery?

L736 is a button cell battery. It is usually smaller in diameter (7.9mm) and height (2.6mm), thus a small source of power, which can be used in equipment with low power requirements. The L736 battery has a voltage of 1.55V, which is typical of most silver oxide batteries. The battery is popular due to its characteristic of offering continuous voltage output over a long duration, which makes it one of the best options to use when it comes to watches and other small electronic items that need a regular power supply but not as often as other batteries.

 

L736 Battery

 

What Are the Uses of the L736 Battery?

 

  • Wristwatches: The L736 battery is a popular battery in wristwatches, allowing it to be a reliable power source for the analog and digital models.
  • Calculators: L736 battery is used in many handheld calculators, which provide efficient and long power supply when it comes to calculating daily tasks.
  • Hearing Aids: The L736 battery is suitable for application in hearing aids due to its small size and constant voltage, so that it provides a constant level of performance over time.
  • Medical Devices: One of the devices used in the L736-powered medical devices is the glucose monitors and thermometers due to their compactness and stability.
  • Key Fobs: L736 batteries are common in car key fobs, which require the required power to lock and unlock.
  • Cameras: There are digital cameras with battery L736 that are also used to run memory and clock functions on the camera.

 

What Are the Equivalent Batteries of the L736?

 

SR621SW Battery

One of the most commonly used is the L736 which has the same battery as SR621SW. The two batteries are identical in the amount of silver oxide and are similar in voltage rating(1.55 V); therefore, both can be used in most of the applicable devices that have a need for a small-power, long-life-span battery. The L736 and SR621SW are, however, basically identical in terms of voltage and size, but it should be noted that the SR621SW, in many marketing cases, comes under various brand names, and the quality of manufacturing could be different.

 

AG6 Battery

Another L736 counterpart, the AG6 battery, has been widely used as an alternative to the L736 in numerous small electronics. The AG6 is rated at 1.55 V, and the physical size of the device is the same as the L736. giving it a height of 2.6mm and a diameter of 7.9mm. Some people would choose to use an AG6 battery due to its reliability and bulk quantity availability, and thus cost-effective to the user who needs to replace batteries in several devices.

 

364 Battery

Another compatible product to the L736 battery is the 364 battery, which is often used as a substitute since it is of a similar size and voltage. The benefit of the 364 battery is that it is available in bulk at a more affordable price, which may be perfect for those who need to change their batteries in bulk or those who wish to hoard it to use it over a long period of time. The 364 is commonly packaged in several packs as well as sold individually, and can be used with many different gadgets, such as a wristwatch, hearing aids, and a calculator.

 

377 Battery

Another possible alternative to L736 is the 377 battery. Although it has the same 1.55V voltage, it is a little different with respect to how it is made and its size. The 377 is common in equipment that can accept slight changes in size or power consumption, like remote controls and small electronics.

 

SG6 Battery

The SG6 is less popular as a replacement for L736. The size and design might not necessarily fit devices that need the L736. although it also has a rating of 1.55 V. The SG6 is occasionally applied to specialty applications, although it is less standardized and thus may not necessarily be the most dependable solution.

 

SR621W Battery

The SR621W is another model of the SR621SW with 1.55 V voltage, but with a 7.9mm diameter and 2.6mm height. Although it has technically the same performance as the SR621SW, it can be branded differently. It is a good substitute since it has the same specifications as a replacement for the L736 in most of its uses, like in a wristwatch and calculator.

 

AG5 Battery

The other substitute that can be offered as a replacement for the L736 is the AG5 battery, though it differs slightly in its dimensions in a few cases. It leads to 1.55 V of current that is required and is usually used in small devices like key fobs, remote controls and other devices. It is of comparable size to L736. which makes it an option that can fit most of the electronics, but not as popular as other similar models.

 

D377 Battery

The D377 is a type of 377 battery, with the same 1.55 V important rate of voltage, and the same size. It is mainly utilized in machines that can withstand minor changes in dimensions and power consumption. The D377 can be interchangeable with the L736 in devices such as watches and hearing aids, but, just like any other option, it is imperative to make sure that the size and voltage of the device are compatible with the device.

 

SR626SW Battery

The SR626SW is a slightly smaller battery than the L736; it has a diameter of 6.8mm and a voltage of 1.55V. Although it does not perfectly replace the diameter, it can be used in devices where the diameter is flexible to some extent. It is commonly used in smaller watches on the wrists and other smaller electronic devices; however, one should remember that it is used in machines that require a more accurate casing.

 

SR626W

Similar to the SR626SW, the battery SR626W is 6.8mm in diameter and 1.55V in voltage, but the changes in dimensions are a bit different. It is an excellent alternative to smaller devices or equipment that can be used when there is a small change in size. Similar to the SR626SW, it is typically installed in wrist watches and small devices that need a smaller battery.

 

Equivalent Battery Table

Battery Model

Voltage

Diameter

Height

Compatibility

SR621SW

1.55V

7.9mm

2.6mm

Widely used in wristwatches, calculators, and small electronics.

AG6

1.55V

7.9mm

2.6mm

Common replacement in similar devices like SR621SW.

364

1.55V

7.9mm

2.6mm

Suitable for watches, hearing aids, and available in bulk.

SR621

1.55V

7.9mm

2.6mm

Compatible with small electronics, wristwatches, and calculators.

377

1.55V

7.9mm

2.6mm

Works in devices that tolerate slight size or voltage variations.

SG6

1.55V

7.9mm

2.6mm

Less common, often used in specialty or low-demand devices.

SR621W

1.55V

7.9mm

2.6mm

Slightly different branding but otherwise interchangeable with SR621SW.

AG5

1.55V

7.9mm

2.6mm

Often used in small devices like key fobs or small gadgets.

D377

1.55V

7.9mm

2.6mm

A variant of the 377, used in similar applications.

SR626SW

1.55V

6.8mm

2.6mm

Similar to L736 in voltage but slightly smaller in diameter.

SR626W

1.55V

6.8mm

2.6mm

Another option with a slightly smaller diameter but equivalent voltage.

 

Are L736 Battery Equivalent Devices All-Devices Compatible?

 

Compatibility Issues

Although L736 battery equivalents like SR621SW, AG6. and 364 can be used interchangeably in most devices, there are some compatibility problems that can be encountered when using them in some devices. Small variations in size or voltage may result in functional issues. As an illustration, a battery that is either a little bit thicker or thinner than the L736 might not fit in the battery compartment, thus giving poor contact and therefore unreliable performance. Also, although the majority of equivalents have the same 1.55V voltage, the devices can have very pronounced voltage requirements, particularly with sensitive electronics such as hearing aids or medical equipment. In such instances, a battery with a minor voltage difference can lead to a lower performance or even a breakdown of the equipment. To make certain that the replacement functions properly, it is always good to check that the equivalent is of similar physical and electrical specifications as the original battery.

 

How to Test the Fit

  • Install battery L736 equivalent without pressing it down the battery compartment. The battery does not fit in the case of instances where it is too tight or in case it is loose.
  • Ensure that the battery is fitted in the terminals within the compartment accordingly. The contact might not be secure in case the device does not start.
  • Test the replacement battery against a multimeter. It is supposed to be 1.55V; extreme variations may affect the work of the machine.
  • Install the battery, then power on the device to make it a good one. In case of failure of the device, replace the gadget with a similar one or change the battery back to its original one.

 

Conclusion

L736 is a battery needed to power numerous small electronic tools due to its small size and consistent performance in terms of 1.55V output. This qualifies it particularly well for applications in wrist watches, calculators, hearing aids, and other such devices that need a low power consumption that is persistent. In case of replacement, there are multiple L736 analogs, including SR621SW AG6 and 364. which offer the same performance and size, which can be considered as an option in the majority of cases. In changing a battery, it is always important to ensure that the new battery is of similar physical and electrical properties as the original battery, especially so that the new replacement becomes effective.

 

FAQ

Can I use any equivalent battery for the L736?

Equivalents are not all appropriate. Make sure that the new battery has the same voltage, size, and chemistry that the L736 performs best with (1.55V).

How do I know if an L736 equivalent battery is compatible with my device?

Test the battery diameter, height and voltage. In the case of the L736, it will be 7.9mm in diameter, 2.6mm high, and 1.55V output.

What happens if the L736 equivalent battery is slightly different in size?

A loosely fitting battery will not achieve a strong contact and therefore the device itself will not work, not to mention that in the process it can be damaged. It is why it is important to ensure that a battery is compatible with a device.

 

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