Are CR2430 and CR2450 interchangeable?

No. The CR2450 is 5.0 mm thick, which is 2.0 mm thicker than the CR2430 (3.0 mm). Forcing a CR2450 into a CR2430 battery slot will crush internal electrical contacts, break plastic door tabs, and prevent waterproof covers from sealing.

Can I use a CR2430 instead of a CR2450?

No. While a CR2430 physically fits inside the diameter of a CR2450 compartment, its 3.0 mm thickness leaves a 2.0 mm air gap. The contact spring will not hold the battery securely, leading to loose contact, rattling, and device shutdowns.

What is the difference between CR2450 and CR2430 batteries?

Both batteries have the same 24.5 mm diameter and 3.0V nominal voltage. However, the CR2450 is 5.0 mm thick and provides ~540-620 mAh of capacity, whereas the CR2430 is 3.0 mm thick and provides ~270-300 mAh of capacity.

Can I use aluminum foil to make a CR2430 fit in a CR2450 slot?

No. Using folded aluminum foil as a DIY spacer is dangerous. It can shift during movement, bridging the positive outer casing to the negative terminal, causing a short circuit, overheating, and potential battery rupture.

What are the equivalent codes for CR2450 and CR2430?

CR2450 equivalents include Duracell DL2450, Energizer ECR2450, BR2450, and 5029LC. CR2430 equivalents include Duracell DL2430, Energizer ECR2430, BR2430, and KL2430.

Where can I buy CR2450 and CR2430 batteries in Singapore?

You can buy authentic, factory-fresh Panasonic and Toshiba CR2450 and CR2430 batteries in Singapore directly from DigiStoreSG with free domestic shipping. Prices start from S$8.00 for 1 piece, S$12.00 for 2 pieces, and S$20.00 for 5 pieces with tracked Singapore delivery.

CR2450 vs CR2430 Batteries Singapore Guide: Differences, Sizes & Where to Buy

September 27, 2026

CR2450 vs CR2430 3V Lithium Coin Cell Battery Comparison - 5.0mm vs 3.0mm Thickness Difference

Quick Answer Are CR2450 and CR2430 Batteries Interchangeable?

No, CR2450 and CR2430 are not interchangeable. While both share an identical 24.5 mm diameter and supply 3.0 volts of lithium power, they differ substantially in physical thickness and electrical energy capacity:

CR2450 is 5.0 mm thick with a heavy-duty capacity of ~540–620 mAh.
CR2430 is 3.0 mm thick with a standard capacity of ~270–300 mAh.

A 2.0 mm thickness gap prevents them from swapping: inserting a CR2450 into a CR2430 slot will bend contact pins and break plastic compartment latches, while inserting a CR2430 into a CR2450 slot results in loose, intermittent electrical contact.

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Coin cell battery codes often cause confusion because manufacturers use cryptic numbering systems. When shopping for replacement batteries for your car key fob, smart home sensor, or digital caliper, grabbing a CR2430 when you needed a CR2450 is a common mistake. Below is our complete engineering breakdown of how to tell them apart, the risks of forced substitution, and where each battery is commonly used.

1. Decoding the Code: What Does "CR2450" and "CR2430" Actually Mean? IEC 60086-3

The International Electrotechnical Commission (IEC) standardizes coin cell naming so that physical dimensions and chemical properties are embedded directly into the model code:

CR 24 50

C: Lithium Manganese Dioxide chemistry (3.0 V)
R: Round / Coin cell shape
24: 24.5 mm diameter
50: 5.0 mm thickness

CR 24 30

C: Lithium Manganese Dioxide chemistry (3.0 V)
R: Round / Coin cell shape
24: 24.5 mm diameter
30: 3.0 mm thickness

Rule of Thumb: In any standard CR coin cell code, the first two numbers specify the diameter in millimeters, and the final two numbers specify the thickness in tenths of a millimeter.

5. Cross-Reference Chart: Equivalent Brand Codes

Different battery brands frequently use their own proprietary model codes. If your old battery has one of the following numbers stamped on it, it matches the respective IEC standard size:

CR2450 Equivalents 5.0 mm / 600 mAh

Duracell: DL2450
Energizer: ECR2450
ANSI / NEDA: 5029LC
Other Codes: BR2450, KCR2450, LM2450

CR2430 Equivalents 3.0 mm / 290 mAh

Duracell: DL2430
Energizer: ECR2430
ANSI / NEDA: 5011LC
Other Codes: BR2430, KCR2430, KL2430

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Where to Buy Authentic CR2450 & CR2430 Batteries in Singapore?

Avoid stale counterfeit batteries that leak or die inside key fobs after two months. DigiStoreSG supplies fresh, factory-sealed Panasonic and Toshiba 3V Lithium CR2450 and CR2430 coin cells with 10-year shelf life. All orders include Free Singapore Delivery with unified transparent pricing:

• 1 Piece: $8.00 nett • 2 Pieces: $12.00 nett • 5 Pieces: $20.00 nett

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5.0mm High Capacity