CR2450 Battery Guide – 3V Lithium Coin Cell Specs, Replacements & Applications

CR2450 Battery: Full Guide to 3V Lithium Coin Cell, Specs, Uses & Replacements

1. What Is a CR2450 Battery?

The CR2450 battery is a lithium 3V coin cell, part of the button cell family. Its model name indicates its size: "24" means 24mm in diameter, and "50" means 5.0mm in thickness. It's widely used in compact, low-power devices due to its small size and stable output.

2.CR2450 Battery Specifications

• Voltage: 3 Volts
• Chemistry: Lithium (non-rechargeable)
• Diameter: 24 mm
• Height/Thickness: 5.0 mm
• Capacity: ~550–620mAh
• Shelf Life: Up to 10 years

Note: "DL2450" is Duracell's version of the CR2450. It has the same size and performance.

3.Key Features of CR2450

• High capacity: Longer battery life than many other coin cells
• Stable 3V output: Ensures consistent performance in devices
• Wide temperature range: Operates reliably between -20°C and +60°C
• Leak-resistant design: Especially in branded versions
• Compact size: Perfect for small electronics

4. Applications of CR2450

CR2450 is the best battery for long-term, low-drain use items, such as:

• Car key fobs (try BMW keys in particular)
• Watches and clocks
• Medical devices (thermometers, glucometers)
• Calculators and digital scales
• Both the IoT sensors and smart home devices
• LED lights, toys, Christmas ornaments 

5. Top CR2450 Battery Brands

For best performance and safety, stick to well-known manufacturers:

• Panasonic CR2450
• Energizer CR2450
• Duracell DL2450
• Sony CR2450
• Maxell
• Renata
• Toshiba

They offer retail packs or bulk options depending on usage needs.

6. CR2450 Replacements & Equivalent Models

You can replace a CR2450 with equivalent models that match size and voltage:

• DL2450 (Duracell's version)

• ECR2450 (Energizer's label)

• KCR2450 (Maxell and others)

• BR2450 (slightly different chemistry, lower voltage)

Be sure to check your device's specs before substituting.

7. CR2450 vs CR2032 – What's the Difference?

Feature	CR2450	CR2032
Voltage	3V	3V
Diameter	24mm	20mm
Thickness	5.0mm	3.2mm
Capacity	~620mAh	~220mAh
Battery Life	Longer	Shorter
Compatibility	Less common size	More widely used

Conclusion: CR2450 lasts longer but is larger; CR2032 is more common but with lower capacity. Use only if the size fits your device.

8. Can You Recharge a CR2450 Battery?

The standard CR2450 is not rechargeable. However, there are rechargeable versions such as LIR2450 (3.6V lithium-ion). These are not 1:1 replacements - they may damage a device not rated for higher voltage. Only use rechargeable alternatives in compatible devices.

9. Common Use Case: CR2450 in BMW Keys

CR2450 batteries are frequently used in BMW car key fobs. They offer long-lasting power and consistent performance. When replacing, ensure the correct polarity and use branded versions like Panasonic or Energizer for safety.

10.FAQ – Frequently Asked Questions

Q1：What is the difference between CR2450 and DL2450?
A: No functional difference. DL2450 is what they're called by Duracell, but it's the same as CR2450.
Q2: Can this be replaced with a CR2032 instead of a CR2450?
A: Not recommended. (CR2032 size is thinner and may not be able to make contact or obtain good battery life.)
Q3: How to safely dispose the CR2450 batteries?

A: Bring them to a battery recycling center. For environmental reasons, don't toss them in regular trash.

Conclusion

The CR2450 battery is a powerful, long-lasting 3V lithium coin cell ideal for a variety of electronic devices. Whether you're replacing a BMW key battery, powering a digital thermometer, or need a reliable button cell, CR2450 is a top choice. Choose trusted brands, understand equivalent models, and follow best practices for safe use and disposal.

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