MTK
New and Original factory sealed
The CR2450 battery is a popular lithium coin cell used in devices such as key fobs, medical instruments, and small electronics.
When it needs replacement, many users search for a CR2450 battery equivalent and often wonder if options like CR2032, CR2430, or CR2025 can be used as replacements.
This guide explains what a CR2450 battery is, whether common alternatives are interchangeable, and how to choose a safe and reliable replacement.
A CR2450 battery is a 3-volt lithium coin cell commonly used to power small electronic devices that require stable voltage and long battery life.
The “CR” designation indicates lithium manganese dioxide chemistry, while “2450” refers to its size: 24 mm in diameter and 5.0 mm thick.
CR2450 batteries are known for their high capacity, typically around 600–650 mAh, which allows them to last longer than thinner coin cells like CR2032.
They also have a low self-discharge rate, making them ideal for devices that need reliable, long-term power.
These batteries are widely used in key fobs, medical devices, fitness trackers, calculators, memory backup systems, and IoT electronics, where stable performance and long lifespan are crucial.
| Parameter | Specification |
|---|---|
| Battery Type | Coin / Button Cell |
| Chemistry | Lithium Manganese Dioxide (Li-MnO₂) |
| IEC Designation | CR2450 |
| Nominal Voltage | 3 Volts |
| Diameter | 24.0 mm |
| Thickness (Height) | 5.0 mm |
| Typical Capacity | 600–650 mAh |
| Energy Density | High |
| Weight | ~6.0–6.5 g |
| Operating Temperature Range | −20°C to +60°C |
| Shelf Life | Up to 10 years |
| Direct Equivalents | DL2450, ECR2450, BR2450 |
| Rechargeable | No |
| Common Applications | Key fobs, medical devices, fitness trackers, CMOS memory |
Choosing the right battery model is crucial, because using the wrong replacement can directly affect a device’s performance, lifespan, and safety.
Although many coin cell batteries look similar and share the same 3V rating, differences in size, thickness, capacity, and chemistry can prevent proper contact, reduce runtime, or cause the device to malfunction.
Choosing the correct CR2450 battery equivalent ensures a proper physical fit, stable voltage delivery, and reliable long-term operation.
In applications such as key fobs, medical devices, and memory backup systems, an incorrect substitute may drain quickly, trigger error messages, or fail without warning.
Understanding battery equivalents helps users avoid compatibility issues, unnecessary replacements, and potential damage to their devices.
No, CR2450 and CR2032 batteries are not fully interchangeable, even though they are both 3-volt lithium coin cells. The main difference lies in their physical size and capacity.
A CR2450 battery is 24 mm in diameter and 5.0 mm thick, while a CR2032 is 20 mm in diameter and 3.2 mm thick.
Because the CR2032 is both smaller and thinner, it often cannot make proper contact in devices designed for a CR2450.
Even if the size is right, the CR2032 has a much lower capacity, which leads to a significantly shorter battery life.
In short, a CR2032 should only be used in place of a CR2450 if the device manufacturer explicitly allows it.
For reliable performance and safety, it's best to use a true CR2450 battery equivalent rather than substituting a CR2032.
| Feature | CR2450 | CR2032 |
|---|---|---|
| Battery Type | Lithium coin cell | Lithium coin cell |
| Diameter | 24 mm | 20 mm |
| Thickness | 5.0 mm | 3.2 mm |
| Typical Capacity | 600–650 mAh | 220–240 mAh |
| Voltage | 3V | 3V |
| Weight | ~6.2 g | ~3.0 g |
| Applications | Key fobs, medical devices, IoT, memory backup | Watches, calculators, small electronics |
| Interchangeable? | – | – |
Key Takeaway: Even though both batteries are 3V, CR2032 cannot reliably replace a CR2450 because of the smaller size and much lower capacity, which can lead to poor device performance.
In most cases, CR2430 cannot fully replace a CR2450, even though their diameters are the same. The key differences are in thickness and capacity:
Because the CR2430 is thinner and has much lower capacity, it may not make proper contact in devices designed for a CR2450 and will run out faster.
While it might physically fit in some cases, using a CR2430 is generally not recommended, especially for devices that require long-lasting power, like key fobs, medical devices.
✅ Recommendation: Always use a direct CR2450 equivalent (like DL2450 or ECR2450) to ensure proper fit, voltage stability, and battery life.
| Feature | CR2430 | CR2450 |
|---|---|---|
| Battery Type | Lithium coin cell | Lithium coin cell |
| Diameter | 24 mm | 24 mm |
| Thickness | 3.0 mm | 5.0 mm |
| Typical Capacity | 280–300 mAh | 600–650 mAh |
| Weight | ~3.6 g | ~6.2 g |
| Voltage | 3V | 3V |
| Common Applications | Small electronics, low-drain devices | Key fobs, medical devices, memory backup, IoT |
| Interchangeable? | ⚠️ Limited | – |
| Direct Equivalents | – | DL2450, ECR2450, BR2450 |
No, the CR2025 battery is not the same as a CR2450. Although both are 3V lithium coin cells, they differ significantly in size, thickness, and capacity:
| Feature | CR2025 | CR2450 | Notes |
|---|---|---|---|
| Diameter | 20 mm | 24 mm | CR2025 is smaller in diameter |
| Thickness | 2.5 mm | 5.0 mm | CR2025 is much thinner |
| Typical Capacity | 160–170 mAh | 600–650 mAh | CR2450 lasts about 3–4 times longer |
| Weight | ~2.0 g | ~6.2 g | Heavier batteries have higher energy |
| Common Applications | Watches, calculators, small electronics | Key fobs, medical devices, memory backup, IoT | CR2025 is for low-drain devices |
| Interchangeable? | ❌ No | – | Cannot reliably replace CR2450 |
Yes, there is a subtle difference between the CR2450 and CR2450N batteries, though they are basically similar in size and voltage.
| Feature | CR2450 | CR2450N | Notes |
|---|---|---|---|
| Battery Type | Lithium coin cell | Lithium coin cell | Both are 3V lithium batteries |
| Diameter | 24 mm | 24 mm | Same diameter |
| Thickness | 5.0 mm | 5.0 mm | Same thickness |
| Typical Capacity | 600–650 mAh | 600–650 mAh | Capacity is roughly the same |
| Chemistry | Lithium Manganese Dioxide (Li-MnO₂) | Lithium Manganese Dioxide (Li-MnO₂) | Same chemistry |
| Internal Construction | Standard | Modified to handle higher initial discharge | “N” version is optimized for devices that require higher initial surge current, like some memory backup systems or alarm systems |
| Interchangeable? | – | ⚠️ Usually yes, but check device | Safe in most devices, but some sensitive electronics may prefer the “N” version |
Essentially, the CR2450N is a variant of the CR2450 designed to deliver higher initial current without affecting overall capacity.
In most consumer electronics, CR2450 and CR2450N are interchangeable; if your device manual specifies CR2450N, it’s best to follow the recommendation to ensure optimal performance.
The BR2450 is a lithium manganese dioxide battery, often used as a CR2450 alternative, but it is slightly different in discharge characteristics.
It provides stable voltage over a long period and is ideal for low-drain devices like memory backup or IoT sensors.
Although it can replace a CR2450 in most devices, some high-drain electronics may perform better with standard CR2450 chemistry.
The CR2450 is a 3V lithium coin cell widely used in key fobs, medical devices, and memory backups.
Choosing the right equivalent, like DL2450, ECR2450, BR2450, or CR2450N, is essential for proper fit, voltage, and runtime.
Similar batteries like CR2430 or CR2032 cannot fully replace it, so using a true equivalent ensures reliable device performance.
Choosing the right CR2450 battery equivalent requires considering several key factors to ensure proper fit, performance, and safety:
The battery must be 24 mm in diameter, 5 mm thick, and provide 3 volts. Even slight differences in thickness can lead to poor contact or battery detachment.
CR2450 typically has 600–650 mAh capacity. A lower-capacity alternative, like CR2430, will drain faster, so choose a battery with a matching capacity for longer performance.
Standard CR2450 uses lithium manganese dioxide (Li-MnO₂). Some equivalents, like BR2450, have slightly different discharge characteristics; ensure the chemistry suits your device.
Some devices require batteries that can handle high initial surge currents; in these cases, the CR2450N battery is recommended.
Use well-known brands or direct equivalents (DL2450, ECR2450, BR2450) to ensure quality and avoid leakage or poor performance.
Do not substitute CR2450 with thinner or smaller cells like CR2032, CR2025, or CR2430 unless the device specifically allows it.
Tip:Always check your device manual for manufacturer recommendations and verify the battery’s size, voltage, and capacity before purchase.
Replacing a CR2450 battery is simple, but following proper safety practices ensures device longevity and personal safety:
Power Off the Device: Always turn off the device before removing or inserting a battery to prevent short circuits or data loss.
Observe Correct Polarity: Follow the instructions on the device to insert the battery with the positive (+) and negative (−) terminals. Reversing polarity can damage electronics.
Use the Correct Equivalent: Only use CR2450 or certified equivalents. Substituting with thinner or lower-capacity batteries may cause malfunction or leakage.
Handle with Care: Avoid puncturing, crushing, or exposing batteries to heat. Lithium coin cells are flammable if damaged.
Avoid Mixing Old and New Batteries: Never combine a new battery with an old one in the same device; this can cause leakage, uneven discharge, or short circuits.
Store and Dispose Properly: Store spare batteries in a cool, dry place. Dispose of used batteries at authorized recycling centers; do not discard them in household trash.
Keep Out of Reach of Children: Coin cells are small and easy to swallow, which can be extremely dangerous.
Pro Tip: Using a plastic battery holder or tweezers can make replacement easier and reduce the risk of accidental shorting.
Selecting a CR2450 replacement seems simple, but many users make mistakes that can reduce performance or damage devices:
Choosing a battery with the wrong diameter or thickness (like CR2032 or CR2430) can prevent proper fit or cause poor contact.
Even if the voltage matches (3V), differences in capacity (mAh) or chemistry can lead to shorter runtime or unstable performance.
Cheap or unknown batteries may leak, fail early, or damage the device. Always use a reputable brand or certified equivalent.
Combining a new battery with an old one in the same device can cause uneven discharge or leakage.
Batteries like CR2025, CR2032, or CR2430 look similar but cannot reliably replace CR2450 in most devices.
Some devices need batteries capable of high initial surge currents (e.g., CR2450N). Using the wrong type may lead to malfunction.
Tip:Always check the device manual and compare size, voltage, capacity, and chemistry before selecting a replacement.
Choosing the right CR2450 battery or equivalent is essential for reliable device performance and safety.
Common mistakes, like using the wrong size, ignoring capacity, or selecting non-certified brands, can lead to poor battery life, device malfunction, or even damage.
By understanding the specifications, equivalents, and proper replacement practices, you can ensure your devices operate efficiently and last longer.
Always use a direct CR2450 equivalent and follow safety guidelines for the best results.
Common CR2450 battery substitutes include DL2450, ECR2450, BR2450, CR2450N, LM2450, and KCR2450.
Duracell DL2450. This 3-volt lithium coin battery is specifically branded by Duracell and designed to directly replace standard CR2450, ECR2450, and 5029LC batteries.
Yes. In terms of lithium coin cell batteries, the CR2450 has a larger diameter (24.5mm vs 20mm) and is thicker (5.0mm vs 3.2mm) than the CR2032.
Yes. Lowe's CR2450 lithium coin batteries are commonly used in key fobs and small electronic devices. Common brands typically include Energizer, Duracell, and VEVOR.
On a battery, "CR" indicates it's a Lithium Manganese Dioxide chemistry coin or button cell. The "C" stands for Lithium Manganese Dioxide chemistry, and the "R" signifies its round shape.
A CR2450 lithium coin battery lasts between 3 to 5 years in most low-drain devices, while offering a storage life of up to 10 years. The specific lifespan on the brand and usage conditions.
A CR2450 battery is a 3-volt lithium coin cell, also known as a DL2450, ECR2450, 5029LC, CR2450N, and 2450.
Yes. Duracell 2450 (often branded as DL2450) is equivalent to and interchangeable with a standard CR2450 3V lithium coin battery. Both are 3-volt lithium batteries with the same size.
Yes, Dollar General sells Energizer 2450 Lithium Coin Batteries (3-volt), commonly available in 2-packs for devices like key fobs and medical monitors.
A CR2450 battery is used for compact devices requiring reliable, long-lasting power, such as car key fobs, smart home sensors, LED lights, digital thermometers, and fitness trackers.
Read More:
The SR621SW Battery A Complete Guide
SR626SW Battery Everything You Need to Know
Best L1154 Battery Equivalent A complete Guide
Extended More:
MAP Sensor Location, Function, Symptoms and Replacement
What is an RJ45 Connector? Types, Pinouts, and Applications
220 Ohm Resistor Color Code, Features, and Applications
What is an Electronics Circuit? Functions, Design and Types
What is a Resistor? Specifications, Function, Types & Uses
