CR2477 Lithium Battery Guide - Specification Characteristics, Differences from CR2450, Equivalents and Alternatives

The Lithium CR2477 is a non-rechargeable 3.0-volt battery composed of lithium manganese dioxide, also known as DL2477, ECR2477, and KCR2477. These batteries are used in an array of applications, including wristwatches, remote controls, toys, medical devices, and security systems. Their high capacity sets them apart among lithium coin cells.

Catalog

Characteristics and Specifications of the CR2477 Battery

The CR2477 battery measures 24 millimeters in diameter and 7.7 millimeters in height. These dimensions allow it to accommodate a substantial internal volume, making it the largest in its category among button cells. This increased volume grants it one of the highest capacities available for such batteries.

With a typical shelf life of 3 to 7 years, and up to 10 years or more for the latest models, the CR2477 offers excellent stability and longevity. This feature is especially beneficial for equipment that is stored for longer periods of time before use.

The CR2477 battery operates effectively within a temperature range of -30°C to 60°C (-22°F to 140°F). However, it performs optimally under standard room temperature conditions. This characteristic sees varied applications, such as in outdoor devices exposed to fluctuating temperatures and indoor systems controlled at room temperature.

CR2477, BR2477, and LiR2477

CR2477: The Common Choice

CR2477 batteries are widely used due to their manganese dioxide lithium chemistry, which provides a nominal voltage of 3.0 volts. These batteries are known for their long shelf life and low self-discharge rate.

In practical applications, such as in remote controls and medical devices, the stability and longevity of CR2477 prove indispensable, ensuring that devices perform consistently without frequent battery replacements.

BR2477: Stability and Temperature Adaptability

BR2477 batteries employ lithium carbon monofluoride chemistry, resulting in a more stable output voltage and a broader temperature operating range compared to CR2477. Despite technological advancements in CR2477 that have minimized these differences, BR2477 batteries remain relevant in environments where temperature fluctuations are significant.

In industrial sensors or outdoor equipment, where precise voltage regulation is critical, the stable performance of BR2477 can offer substantial advantages.

LiR2477: Rechargeable Convenience

LiR2477 batteries are the rechargeable counterparts within the 2477 series, offering a nominal voltage range between 3.2 and 3.7 volts depending on their specific lithium chemistry.

Because of these voltage differences, it is essential to verify device compatibility before using LiR2477 batteries to prevent operational issues. They have a smaller capacity than their non-rechargeable counterparts but can be recharged over 500 times, making them an environmentally friendly option.

Note：When selecting between CR2477, BR2477, and LiR2477, one must weigh the benefits of each type based on the application's specific requirements.

While CR2477 offers a balance of longevity and sufficient power for everyday devices, BR2477 excels in specialized environments needing stable voltage across temperature extremes. On the other hand, LiR2477 batteries, with their rechargeable nature, cater to applications favoring sustainability and frequent usage.

The following comparison table lists some of the most popular 24 x 7.7 mm button batteries and their most important features and specifications: The following comparison table lists some of the most popular 24 x 7.7 mm button batteries and their most important features and specifications:

Battery Datasheet	Capacity	Operating Temperature	Annual Self-Discharge Rate	Discharge Current
EEMB LiR2477	185±5 mAh @0.2C (37 mA)	-20°C to +60°C	@20°C: 1 month 10%, 2 months 16%, 3 months 20%	37 mA std. cont. 185 mA max. cont.
Jauch CR2477	1000 mAh	-30°C to +85°C	-	2.0 mA max. cont. 15mA max. pulse
Minamoto CR2477	1000 mAh	-20°C to +60°C	-	1.0 mA max. cont. 15mA max. pulse
muRata CR2477X	1000 mAh	-40°C to +85°C	-	1.0 mA max. cont. 30 mA 3s pulse @23°C
Panasonic BR2477A	1000 mAh	-40°C to +125°C	-	0.03 mA std. cont.
Panasonic CR2477	1000 mAh	-30°C to +85°C	-	0.2 mA std. cont.
PowerStream LiR2477	150+ mAh @0.2C (30 mA)	-20°C to +60°C	-	30 mA std. cont. 300 mA max. cont.
Renata CR2477N	950 mAh, 6.8kΩ down to 2.0V @23°C	-40°C to +85°C	<1% @23°C	1.0 mA std. cont. 2.5 mA max. cont.

CR2477 and CR2450

Overview of CR2477 and CR2450

CR2477 stands out impressively, boasting a capacity of up to 1000 mAh, making it one of the highest-capacity lithium manganese dioxide batteries available. On the other hand, the CR2450 offers around 600 mAh. The larger dimensions of the CR2477 provide a distinct advantage in scenarios demanding high power reserves.

Capacity and Applications

The substantial capacity of the CR2477 caters perfectly to applications requiring prolonged power. Think medical devices—reliability and continuous power are non-negotiable. With 1000 mAh, the CR2477 extends operational periods, minimizing frequent replacements. Industrial applications benefit similarly; for example, RFID readers and sensors witness extended lifespans due to this high capacity.

Both CR2477 and CR2450 are fundamental, yet their roles diverge significantly due to their sizes and capacities. The CR2477, with its bulkier profile and 1000 mAh, is ideal for high-energy-demand applications. Conversely, the more compact CR2450's 600 mAh is fitting for devices with moderate energy needs and where spatial efficiency is crucial.

The following table lists the capacities of typical high-capacity lithium non-rechargeable button cell batteries of the most popular/well-known brands:

Brand/Battery	CR2430	CR2354	CR3032	CR2450	CR2477
Duracell	270 mAh Datasheet (PDF)	-	-	540 mAh Datasheet (PDF)	-
Energizer	320 mAh Datasheet (PDF)	-	-	620 mAh Datasheet (PDF)	-
Panasonic	285 mAh	560 mAh Datasheet (PDF)	500 mAh Datasheet (PDF)	620 mAh Datasheet (PDF)	1000 mAh Datasheet (PDF)
Renata	285 mAh Datasheet (PDF)	-	-	580 mAh Datasheet (PDF)	950 mAh Datasheet (PDF)
Sony	300 mAh Datasheet (PDF)	-	-	610 mAh Datasheet (PDF)	1000 mAh
Varta	300 mAh Datasheet (PDF)	-	-	620 mAh Datasheet (PDF)	850 mAh

Conclusion

The 1000 mAh capacity of the CR2477 positions it as the optimal choice for applications needing sustained power over extended periods. In contrast, the CR2450, with 600 mAh, is suitable for less energy-intensive applications where a compact design is preferable. An understanding of these distinctions fosters better decision-making, ultimately enhancing device performance and user satisfaction.

CR2477 Battery Safety

Environmental Considerations

Most CR2477 batteries lack mercury, cadmium, or other harmful pollutants. This makes them more favorable for the environment compared to other types. However, proper disposal remains essential to avert potential environmental risks. Over time, they can leak hazardous substances, contaminating soil and water sources. Following local guidelines for battery disposal, often involving specific recycling programs, can mitigate these risks.

Usage of LiR2477 Batteries

LiR2477 batteries necessitate a compatible charger tailored to their specific voltage and current needs. Chargers not designed for LiR2477 batteries may overheat or mismanage charging cycles, leading to dangerous outcomes. Ensuring a proper charging process not only extends battery life but also maintains safe usage.

Child and Pet Safety

Although CR and LiR2477 batteries are designed with dimensions that reduce the likelihood of accidental ingestion, they should still be out of reach of children and pets. How serious can ingestion be? It can cause significant internal injuries or even fatal conditions. Precautionary measures, such as storing batteries in secure containers, can significantly mitigate these risks.

Frequently Asked Questions [FAQ]

1. Are CR2477 and CR2032 the Same?

No, CR2477 batteries are larger in both size and thickness compared to CR2032 batteries, resulting in greater capacity. The varying sizes of these batteries dictate their specific applications to ensure optimal performance and longevity in their respective devices.

2. Are CR2450 and CR2477 the Same?

No, while the CR2450 shares the same diameter as the CR2477, its thinner profile translates to a lower capacity. This distinction significantly influences their usability across various applications.

3. What Are CR2477 Batteries Used For?

CR2477 batteries are versatile, finding applications in medical instruments, remote controls, electronic meters, and as backup power for memory units. These batteries are favored for their reliability and capacity, ensuring the uninterrupted operation of critical devices.

4. Difference Between CR2477, CR2477N, and CR2477T

These designations—CR2477, CR2477N, and CR2477T—refer to the same battery type, differing only in their labels. This nomenclatural variation is often linked to branding or specific market requirements rather than differences in performance or application.