In today's digital age, batteries are almost everywhere. They play a vital role in everything from basic audio equipment to complex electronic systems. Many everyday devices rely on CR2032 and CR2450 batteries for their small size and reliable performance.

Although these two batteries look similar, they have significant differences, including capacity, size, and lifespan. Knowing these details will help you choose the right battery to ensure your device runs in the best possible way.

Both CR2032 and CR2450 represent types of lithium batteries. These are standard 3V batteries, and their main differences are capacity, size, and lifespan. Here are their main comparisons:

3V Lithium Battery CR2032 vs CR2450

1.Size and Capacity

CR2032: 20mm diameter, 3.2mm height, small size, easy to install in space-constrained devices; nominal capacity is usually between 200mAh-240mAh, suitable for devices that require small battery size and relatively low power consumption.

CR2450: 24.5mm in diameter, 5.0mm in height, with a relatively large overall volume; with a capacity of more than 520mAh, it can provide more lasting power support for the device and is suitable for devices with high requirements for battery life.

2.Electrical performance

Voltage: The nominal voltage of both is 3V, and both can provide stable voltage output for the device during normal use.

Current output: The rated current value of CR2450 is 0.2mA, the continuous output current can reach 15mA, and the flash output current can reach 30mA, which can meet the requirements of most small electronic products such as car remote controls for light, sound, and radio frequency output; CR2032 can also meet the power needs of general electronic devices and the low power requirements of some specific devices.

3.Service life

CR2032: When used in general low-power devices, the shelf life is usually about 5 years, and under ideal conditions of use, the life can be extended to 8 or even 10 years.

CR2450: Under normal conditions of use, the shelf life is generally 3-5 years.

4.Operating temperature range

CR2032: Generally, it can work normally in the temperature range of -20℃ to 60℃.

CR2450: It has a wide applicable temperature range and its performance is relatively stable under different ambient temperatures, but its performance may be affected to a certain extent in extremely high or low temperature environments, and the battery capacity and voltage may decrease compared to normal temperature.

5.Self-discharge rate

CR2032: The self-discharge is small. For example, the Panasonic brand adopts low self-discharge technology to ensure that the battery can maintain good performance after long-term storage.

CR2450: The self-discharge rate is also low, with good preservation performance, and it can still maintain a certain amount of power after long-term storage.

6.Price

Usually, due to the larger capacity of CR2450, its price will be slightly higher than CR2032.

7.Applicable scenarios

CR2032: Smaller devices such as watches, remote controls, scales, calculators.

Suitable for low-power and lightweight devices.

CR2450: Larger devices such as smart door locks, sensors, LED lighting.

Suitable for devices with medium power consumption and longer battery life.

Are cr2450 and cr2032 interchangeable?

CR2450 and CR2032 batteries are usually not interchangeable. The main reasons are as follows:

Size difference

CR2450: 24.5mm diameter, 5.0mm height.

CR2032: 20mm diameter, 3.2mm height.

The diameter and height of the two differ by 4.5mm and 1.8mm, respectively. This size difference makes them unable to fit in the battery compartments designed for each other.

Different capacity

CR2450: Rated capacity is usually above 520mAh.

CR2032: Rated capacity is between 200mAh-240mAh.

If CR2032 is used in a device originally designed for CR2450, the device may have a significantly shorter battery life or even fail to work properly due to insufficient capacity; conversely, if CR2450 is used in a device designed for CR2032, the battery may be too large to be installed, or even if it is installed, it may cause damage such as squeezing the internal circuit of the device.

So, what are CR2032 and CR2450 equivalent batteries?

CR2032 Equivalent Battery

CR2032 button batteries are standard 3V lithium batteries, and there are many equivalent batteries that can be used as substitutes. Here are some common equivalent battery models:

DL2032

Manufacturer: DuPont (Duracell)

Completely equivalent, the main difference is the brand name.

BR2032

Manufacturer: Panasonic (Panasonic), etc.

The chemical composition is slightly different (BR is a manganese dioxide-lithium system, CR is a manganese dioxide-lithium carbonate system).

BR2032 is more stable in high temperature environments, but the capacity is slightly lower.

ECR2032

Manufacturer: Energizer

Completely equivalent, commonly used in electronic devices.

KCR2032

Manufacturer: Kodak or other.

Interchangeable with CR2032.

L2032

Name used by some third-party manufacturers, fully compatible with CR2032 electrical parameters.

GPCR2032

Manufacturer: Duracell or GP batteries.

Direct replacement.

Non-standard models

If CR2032 is not readily available, the following more common models may also work, but be aware of physical size and capacity changes:

CR2025

Same voltage, but 2.5mm thick (thinner than CR2032).

Lower capacity (about 150-170mAh).

May need to add spacers to maintain contact if device battery compartment allows.

CR2016

Same voltage, but thinner (1.6mm).

Lower capacity (about 90-100mAh).

Not usually recommended except for emergency use.

CR2450 equivalent battery

DL2450

Manufacturer: Duracell

Fully compatible, different brand names.

BR2450

Manufacturer: Panasonic, etc.

Slightly different chemical composition (BR battery is polycarbonate lithium system, suitable for high temperature environment).

Slightly lower capacity, but better performance in extreme temperatures.

ECR2450

Manufacturer: Energizer

Fully equivalent, usually used for medium and high power consumption devices.

KCR2450

Manufacturer: Kodak or other third-party manufacturers.

Direct replacement, the nominal parameters are the same.

ML2450

Rechargeable lithium manganese battery version.

Slightly lower voltage (usually 2.8V), need to make sure the device supports it.

L2450

Name used by some third-party manufacturers, compatible with CR2450.

Non-standard models (emergency replacement)

If CR2450 is not easy to obtain, the following models can be used as a short-term replacement, but there are some restrictions:

CR2430

Same voltage, thinner thickness (3.0mm).

Lower capacity (about 280-300mAh).

If the device battery compartment allows, you can use a spacer to ensure contact.

CR2477

Same voltage, higher capacity (850-1000mAh).

Thicker (7.7mm), need to make sure the device battery compartment can accommodate it.

Key Considerations

Voltage consistency: Make sure the nominal voltage of the replacement battery is 3V.

Physical size: The size of the replacement model must be compatible with the device battery compartment.

Application scenario: If the device requires continuous high power output, give priority to the original model or a replacement model with higher capacity.

FAQs about batteries CR2032 and CR2450 :

1. What are cr2450 and cr2032 main differences?

Dimensions: CR2032 is 20mm in diameter and 3.2mm thick; CR2450 is 24mm in diameter and 5.0mm thick.

Capacity: CR2032 has a capacity of about 210-240mAh; CR2450 has a capacity of about 500-600mAh.

Weight: CR2450 is heavier (about 6.9g) and has a higher energy density.

2. Can CR2032 and CR2450 be used interchangeably?

Not really, for the following reasons:

Dimensional differences: If the device battery compartment is designed to fit only CR2032, then CR2450 cannot be put in.

Power consumption requirements: If the device power consumption is higher and the battery compartment allows, CR2450 is a better choice.

Electrical performance: Both have the same voltage, 3V, so they can be interchanged in theory if they are compatible.

3. Which battery is better for long-term use，CR2032 vs CR2450?

CR2450 is more suitable because it has a higher capacity.

Suitable for devices with high power consumption or that need to be powered for a long time, such as smart door locks and sensors.

CR2032 is more suitable for small, low-power devices, such as remote controls and weight scales.

4. How long is the life of CR2032 and CR2450 batteries?

CR2032: The average life is 1-2 years, depending on the power consumption of the device.

CR2450: The average life is 3-4 years, suitable for longer use.

The service life is also affected by the power consumption of the device, temperature, and working conditions.

5. Which battery performs better in low temperature environments，CR2450 vs CR2032 batteries?

CR series batteries (such as CR2032 and CR2450) have similar performance in low temperature environments, but the capacity may decrease.

If you need better low temperature performance, you can choose BR2032 or BR2450, which are suitable for extreme temperature environments.

6. What devices commonly use batteries CR2032 and CR2450?

CR2032:

Remote controls

Watches

Calculators

Health monitoring devices (e.g., blood glucose meters)

CR2450:

Smart door locks

LED lights

Bluetooth devices

Wireless sensors

7. Can rechargeable batteries replace CR2032 or CR2450 lithium battery ?

Yes, but be careful:

Rechargeable versions (e.g., ML2032 or ML2450) are usually 2.8V, not 3V, and require device support.

The CR series is non-rechargeable, and charging may cause leakage or explosion.

8. How do I store these batteries correctly，CR2032 and CR2450 3v battery?

Store in a dry, cool place away from direct sunlight and high temperatures.

The recommended storage temperature is between -20°C and 60°C.

Avoid contact with metal objects to prevent short circuits.

9. Is there a big price difference between 3v lithium battery CR2032 and CR2450?

CR2032 is usually cheaper because it is smaller and has a lower capacity.

CR2450 is more expensive but has a higher capacity and lasts longer.

10.Is cr2450 battery rechargeable?Is cr2032 battery rechargeable？

Non-rechargeable, CR2450 and CR2032 are standard disposable lithium batteries that use a manganese dioxide-lithium chemistry and are designed to be thrown away after use.

11.Where to buy cr2450 battery?

You can buy Panasonic CR2450 3v lithium battery at Dasen Electronics. We are a professional electronic component distributor and can provide various types of batteries and rich electronic components.