CR2477 Battery Guide: Specifications, Equivalents, and Applications

When it comes to powering small electronics that demand both reliability and long battery life, the CR2477 battery often stands out as a top choice. You’ve probably seen this little powerhouse inside your car key fob, watch, medical device, or even a motherboard. 

But have you ever considered what makes the CR2477 so special, and how it compares to similar coin cell batteries, such as the CR2032 or CR2450?

Let's explore all about the CR2477 battery!

What is a CR2477 Battery?

The CR2477 is a non-rechargeable lithium coin cell battery that delivers a nominal voltage of 3 volts and a high capacity of around 1000 mAh. Its name is derived from its dimensions: 24 mm in diameter and 7.7 mm in height.

This makes it thicker than many other coin cells, such as the CR2032, which is why it's ideal for devices that need extended run-time without frequent battery changes. 

It's commonly used in compact electronic applications ranging from key fobs and fitness trackers to medical instruments and industrial sensors.

Technical Specifications

Key Features

• High Energy Density: The CR2477 battery is known for its high energy storage in a small size. This means it can hold more power than many other coin cell batteries of similar shape, especially when compared to smaller batteries like the CR2032. Because of this, devices powered by CR2477 can run for much longer before needing a battery change. It's a great choice when long battery life is important, such as in medical devices, remote controls, or security gadgets.

• Stable Discharge Voltage: This battery provides a steady 3V output during most of its usage time. That means your device won’t experience sudden drops in power or performance as the battery gets used. A consistent voltage helps electronics run smoothly without unexpected shutdowns or glitches. This feature is especially useful for sensitive electronics like motherboards and precision instruments.

• Low Self-Discharge Rate: Even when it's just sitting in storage, the CR2477 loses very little of its charge. This low self-discharge rate allows the battery to stay ready for use even after being stored for years. That's why it's commonly used in backup systems like CMOS memory in computers, where the battery might not be used right away but still needs to work when needed.

• Durability: The CR2477 is built to last in tough conditions. It can withstand shocks, vibrations, and even strong movements, which makes it a good fit for portable and industrial equipment. If your device is used in environments where it gets shaken or dropped—like a handheld meter, remote sensor, or key fob—the CR2477 can handle it.

• Wide Operating Temperature Range: This battery works well in both cold and hot temperatures, from -20°C all the way up to +70°C. Some special models can even operate at temperatures as high as +85°C. This makes it a reliable choice for outdoor gadgets, automotive devices, and tools used in harsh environments, whether it’s freezing winter or a hot summer day.

​

CR2477 Battery Common Applications

The CR2477 is used in devices where compact power and long battery life are essential. Here’s a list of typical uses:

• Watches and Smartwatches

• Car Keys and Remote Controls

• Medical Devices (e.g., glucose monitors, digital thermometers)

• Security Devices (e.g., door sensors, motion detectors)

• CMOS Backup Power for Motherboards

• Handheld Gaming Devices

• Fitness and Activity Trackers

• LED Flashlights and Laser Pointers

• Industrial Sensors and IoT Modules

Safety Considerations

Due to its compact size and shiny finish, the CR2477 battery poses a serious swallowing hazard for children. If ingested, it can cause severe internal burns or death within hours. Always:

• Keep batteries out of children's reach.

• Store used and new batteries securely.

• Seek immediate medical attention if swallowed.

Mounting Options

The CR2477 is available in multiple configurations, making it versatile for both consumer and industrial device assembly. These include:

1. Flat-top cells – for general insertion into devices.

2. With PCB Pins – for circuit board mounting in electronics manufacturing.

3. With Solder Tabs – for more secure installations.

CR2477 Battery Equivalents

Several batteries share the same size and performance characteristics as the CR2477. These equivalents are often labeled by brand-specific codes. Here's a breakdown of direct replacements:

Note: Always verify voltage and dimensions before replacing a battery, especially in sensitive equipment.

CR2477 Battery vs. CR2450 vs. CR2032

Let’s compare these three common coin cells:

Top Manufacturers of CR2477 Batteries

1. USA-Based Manufacturers

• Duracell: DL2477 – Renowned for quality and performance.

• Energizer: ECR2477 – A widely available and reliable option.

2. Japanese Manufacturers

• Panasonic: BR2477 – Known for consistent performance in critical devices.

• Maxell: LM2477 – Frequently used in medical and industrial applications.

• Sony: Produces standard CR2477 cells with broad distribution.

3. German Manufacturers

• Varta: Offers high-performance lithium coin cells, including CR2477.

• Koehler: Specializes in industrial-grade CR2477 equivalents.

4. Chinese Manufacturers

• Vinnic: Offers the L2477, a budget-friendly equivalent.

• Other brands include Eunicell, GP Batteries, and Camelion.

5. Swiss Manufacturers

• Renata: Produces the CR2477N, popular in precision instruments.

6. Others

• Philips, Rayovac, Toshiba, Murata, Sanyo, Exell, Lenmar – These brands may offer niche or application-specific versions of the CR2477.

Looking to Buy the CR2477 Battery?

If you're ready to purchase high-quality CR2477 batteries, we recommend checking out Chipsmall. As a trusted distributor of electronic components, Chipsmall offers genuine, reliable batteries from top global manufacturers—perfect for both consumer and industrial needs. It also ensures the best quality, competitive pricing, and fast delivery.

FAQs

Q1. Can I replace a CR2477 with a CR2032?

A: No. Although both are 3V lithium batteries, the CR2477 is significantly larger and has a much higher capacity than the CR2032. They are not physically or electrically interchangeable.

Q2. Is the CR2477 battery rechargeable?

A: No. The CR2477 is a primary (non-rechargeable) lithium battery. Attempting to recharge it can lead to leakage or explosion.

Q3. What’s the difference between BR2477 and CR2477?

A: BR2477 is a Panasonic branding for the CR2477. Technically, it may use slightly different electrolyte chemistry (e.g., poly-carbonmonofluoride) but has the same size and voltage.

Q4. Can I use a CR2450 instead of a CR2477?

A: No. Although they share the same diameter (24 mm), the CR2450 is thinner (5.0 mm vs. 7.7 mm) and has lower capacity. It may not fit securely in devices designed for CR2477 batteries.

Q5. What are some signs a CR2477 battery is depleted?

• The device fails to power on.

• Dim or flickering displays.

• Unreliable sensor readings.

• Warning beeps or low-battery indicators on medical or industrial devices.

Conclusion

The CR2477 is a high-capacity, 3V lithium coin cell battery that’s well-suited for devices requiring long-lasting, reliable power in a compact form. With multiple equivalents available from trusted global brands and strong performance in extreme conditions, it remains a popular choice for engineers and consumers alike.

If you're replacing a depleted cell or designing a product that needs dependable power, make sure to understand the CR2477’s capabilities and how it differs from similar batteries like the CR2032 or CR2450.