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The CR2450 3V battery is a widely used lithium coin cell, known for its high capacity, stable voltage output, and long service life.
From key fobs and medical devices to fitness trackers and smart electronics, this compact power source plays a critical role in keeping modern devices running reliably.
Understanding battery CR2450 specifications, performance characteristics, compatibility, and safety considerations can help you choose the right battery and avoid common issues.
This guide covers everything you need to know about CR2450 3V batteries, from basic informations to practical selection and handling tips.
A CR2450 lithium battery is a 3-volt coin cell battery. It is used to power small electronic devices that require a compact size with relatively high energy capacity.
The “CR” designation indicates that it uses lithium manganese dioxide (Li-MnO₂) chemistry, while “2450” refers to its physical dimensions: about 24 mm in diameter and 5.0 mm in thickness.
CR2450 Battery Size and Its Other Parameters
CR2450 batteries are known for their stable voltage output, long shelf life, and low self-discharge rate, making them ideal for devices that need reliable, long-term power.
Compared to thinner coin cells, they have higher capacity, so they are suitable for applications such as key fobs, medical instruments, fitness trackers, CMOS memory backup, and IoT devices.
| Specification | Details |
|---|---|
| Battery Type | Lithium coin cell |
| Chemical Composition | Lithium Manganese Dioxide (Li-MnO₂) |
| Nominal Voltage | 3V |
| Typical Capacity | 600–620 mAh |
| Diameter | 24.5 mm |
| Thickness | 5.0 mm |
| Weight | 6–7 g |
| Operating Temperature | –20°C to +60°C |
| Shelf Life | Up to 10 years |
| Self-Discharge Rate | < 1% per year (at room temperature) |
| Rechargeable | No |
| Max Discharge Current | 1-3 mA (varies by manufacturer) |
| Continuous Discharge Current | 0.2-0.5 mA |
Batteries CR2450 are popular for powering compact electronic devices because they combine strong performance with long-term reliability. Their key features include:
With a typical capacity of around 600–620 mAh, CR2450 batteries provide more power than many standard coin cells. This makes them suitable for devices with higher energy demands.
The battery delivers a stable 3-volt output throughout most of its discharge cycle, ensuring reliable device performance.
Because of their lithium chemistry and low self-discharge, lithium CR2450 battery can store up to 10 years without significant loss of capacity.
These batteries are ideal for low-power and standby applications, maintaining their charge well even when the device is used intermittently.
CR2450 batteries perform reliably in both cold and warm environments, typically from –20°C to +60°C.
Despite their high capacity, CR2450 batteries maintains the slim button cell shape, allowing it fits easily into small electronic devices.
As a non-rechargeable battery, the CR2450 coin cell battery requires no charging or conditioning, making it convenient for long-term use.
The CR2450 battery is known for its long lifespan and dependable performance, especially in low to moderate power applications.
Under typical conditions, a CR2450 battery can last several years, depending on the device’s power consumption and usage frequency.
In low-drain devices such as memory backup systems, sensors, or key fobs, a CR2450 lithium coin cell battery may operate for 5 to 10 years.
In medium-power applications like fitness trackers or wireless accessories, the lifespan is usually shorter. Because of its higher capacity, it still significantly longer than smaller coin cells.
CR2450 Battery Discharge Cureve
During most discharge cycles, the battery performance remains stable, with the output voltage at 3V until near the end of its lifespan.
Factors that influence lifespan and performance include operating temperature, discharge rate, storage conditions, and device duty cycle.
Extreme temperatures, frequent high-current pulses, or long storage before use can reduce overall battery life.
Overall, the CR2450 offers an excellent balance of high capacity, voltage stability, and long service life, making it a reliable choice for devices that require consistent power over extended periods.
The CR2450 3v lithium coin cell battery has several equivalents and compatible models, but proper matching is essential to ensure safe and reliable operation.
Batteries equivalent to the CR2450 typically share the same 3V lithium chemistry and similar dimensions, allowing them to fit and function correctly in supported devices.
Common CR2450 equivalents include DL2450, ECR2450, and BR2450 (Note: the BR2450 uses a different lithium chemistry and may have different performance characteristics).
While these batteries are often physically interchangeable, differences in capacity, discharge behavior, and temperature tolerance can affect device performance.
CR2450 vs CR2032
Compatibility depends on the battery compartment and power requirements. A battery with the same voltage but different thickness or capacity may not fit or deliver the expected runtime.
Additionally, CR2450 lithium 3v batteries are not interchangeable with thinner coin cells such as CR2032 or CR2025 due to size differences, even though they share the same 3V rating.
To avoid issues, always consult the device manufacturer’s specifications and use the recommended battery model.
Choosing a compatible CR2450 equivalent ensures proper fit, optimal performance, and safe operation.
With a capacity of around 600–620 mAh, the CR2450 provides longer runtime than smaller coin cells, reducing the need for frequent replacements.
It delivers a consistent 3V output, ensuring smooth and accurate operation of the device for most of the battery's lifespan.
Because of its lithium chemistry and low self-discharge rate, a CR2450 lithium coin battery can store up to 10 years with minimal power loss.
Despite its small, lightweight, the CR2450 has enough power to support medium-load applications.
The battery operates reliably over a wide temperature range, making it suitable for both indoor and outdoor devices.
As a non-rechargeable battery, it requires no charging, conditioning, or any other maintenance.
CR2450 lithium batteries are widely available from multiple manufacturers, making them easy to source and replace.
Key Fobs and Remote Controls: Powers car key fobs, garage door remotes, and other wireless controllers.
Medical Devices: Because of its stable voltage and long life, it is used in devices like glucose meters, heart rate monitors, and hearing aids.
Fitness Trackers and Wearables: Provides reliable energy for smartwatches, fitness bands, and other wearable electronics.
Computer Motherboards and CMOS Memory Backup: Maintains BIOS settings and system clock even when the main power is off.
IoT and Smart Devices: Powers sensors, trackers, smart locks, and other smart home devices.
Small Electronics: Ideal for calculators, electronic toys, LED lights, and other low-drain devices.
Selecting the right lithium battery CR2450 3V ensures your device performs reliably and lasts as long as possible. Here are the key factors to consider:
Confirm whether your device specifically requires a CR2450 battery or a compatible equivalent. Avoid substituting with thinner or smaller coin cells like CR2032, even if the voltage matches.
If your device consumes more power or you want to extend the battery replacement cycle, choose a battery with a higher mAh ratings.
Choose reputable brands to ensure consistent voltage, reliable performance, and safety. Cheap, unbranded batteries may leak or fail prematurely.
Check the manufacturing date; fresher batteries perform better and last longer. Store unused batteries in a cool, dry place to maintain their lifespan.
If your device operates in extreme temperatures, select a CR2450 button battery rated for wide temperature tolerance.
CR2450 is typically non-rechargeable; ensure your device is designed for disposable lithium cells.
By considering compatibility, capacity, quality, and storage conditions, you can choose the right CR2450 battery that maximizes performance and longevity for your device.
While battery CR2450 3v is generally safe, proper handling and storage are essential to prevent accidents and ensure optimal performance. Here are key safety tips:
Always insert the battery with the positive (+) and negative (–) terminals correctly according to the device instructions. Reversing polarity can damage your device or the battery.
Do not let the battery terminals touch metal objects like keys or coins. Short circuits can cause overheating, leakage, or even fire.
Keep batteries in a cool, dry place away from direct sunlight or heat sources. Avoid storing loose batteries in pockets or drawers to prevent them from contacting with other metal objects.
CR2450 batteries are small and easily swallowed, posing a serious choking hazard. Consider battery covers or child-safe compartments in devices.
CR2450 coin battery is a single-use lithium battery. Do not charge, puncture, or disassemble. Attempting to do so may cause leakage, fire, or explosion.
Follow local regulations for battery recycling. Do not throw lithium batteries in the trash to prevent environmental harm.
Exposure to high or low temperatures can reduce performance, shorten lifespan, or cause leakage.
Although CR2450 3v coin cell battery is reliable, users may encounter problems if it is handled, stored, or installed improperly. Here are common problems and ways to troubleshoot them:
By identifying the battery issues and following proper troubleshooting steps, most problems with CR2450 3v lithium battery can resolve quickly, ensuring your devices run smoothly and safely.
The CR2450 3V battery is a versatile and reliable power source for key fobs, medical instruments, wearables and IoT gadgets.
Its high capacity, stable voltage, long shelf life, and compact design make it ideal for applications that require consistent, long-lasting performance.
By understanding its specifications, features, equivalents, and proper handling, you can select the right CR2450 battery lithium, maximize device performance, and avoid common problems.
Following safety guidelines and troubleshooting tips ensures that the battery and your devices remain safe and efficient, making the CR2450 a dependable choice for everyday electronics.
Common CR2450 battery equivalents include DL2450, ECR2450, BR2450, and CR2450N.
No. The CR2450 is a larger, higher-capacity 3V lithium coin battery (around 620mAh) for high-drain devices like car remotes; the CR2032 (around 240mAh) is standard for low-power items like watches and calculators.
Yes. Dollar General carries the Energizer 2450 Lithium Coin Battery (3-volt) in 2-packs. These batteries are suitable for devices such as keyless entry systems, heart rate monitors, and toys.
A CR2450 lithium coin cell battery typically lasts between 3 to 5 years in most devices. The actual lifespan depending on usage frequency and brand quality.
Yes. Duracell 2450 (often labeled as DL2450) and CR2450 is a 3-volt lithium coin battery with identical physical dimensions (24.5 mm × 5 mm) and 620 mAh capacity. CR2450 is direct replacement for DL2450.
No. CR2025 and CR2450 have different diameters (20mm vs 24mm) and thicknesses (2.5mm vs 5.0mm), meaning the CR2025 will not fit securely and fail to make proper electrical contact.
On a battery, CR stands for Lithium Manganese Dioxide chemistry (C) in a Round (R) shape. The numbers following "CR" indicate the physical dimensions: the first two digits are the diameter and the last two are the thickness.
No. the CR2450 is significantly thicker (5mm vs. 3mm) and has twice the capacity of the CR2430. This means that the thicker CR2450 won't fit in a CR2430's space and the CR2430 won't last as long in a CR2450's device.
The main difference is: the standard CR2450 has a flat negative terminal; the CR2450N have a recessed negative terminal with a lip or notch for more secure fit in specific devices with notched holders, like some key fobs or wireless sensors.
Yes. Lithium batteries can catch fire even when not in use due to manufacturing defects, internal short circuits from contamination, or improper storage conditions (like extreme heat/cold).
Even if lithium batteries are not used for a long time, their performance can degrade due to self-discharge and chemical aging. Depending on the storage conditions, the capacity will usually start to decline after 3-10 years.
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