Duracell CR2450 Lithium Coin Battery (3V)

The Duracell CR2450 is a high-capacity 3V lithium coin cell designed for devices that demand longer runtimes and reliable starts. With a 24 mm diameter and 5.0 mm thickness, it provides substantially more energy than thinner 24 mm cells, making it a strong fit for keyless entry remotes, bike computers and sensors, medical instruments (as specified by the manufacturer), smart home transmitters, and compact LED beacons.

When to Choose the CR2450

• Use if your device explicitly calls for CR2450/DL2450/ECR2450.
• Choose it over CR2430/CR2412 when you need longer runtime in the same 24 mm footprint.
• Avoid if your device compartment is too shallow; using a thinner CR2430 in a CR2450 slot can cause poor contact and shutdowns.
• Do not substitute rechargeable LIR/ML2450 cells unless your device specifies them (different voltage/behavior and much lower cycle life capacity).

Compatibility and Equivalents

Common designations: CR2450, DL2450 (Duracell prefix), ECR2450. These are dimensionally and chemically compatible primary lithium cells. Always match the size and polarity shown in your device.

Key Specs

CR2450 vs. Other 24 mm Coin Cells

• CR2450 vs. CR2430: Same diameter; CR2450 is thicker (5.0 mm vs. 3.0 mm) and typically offers more capacity. If the device specifies CR2450, a CR2430 may lose contact or deliver shorter life.
• CR2450 vs. CR2477: CR2477 is thicker (7.7 mm) with higher capacity, but will not fit devices designed for CR2450.

Estimated Runtime Examples

Capacity and duty cycle drive runtime. Use these approximations as planning guides:

• 10 µA continuous (low-power sensor): up to ~6 years, typically limited by self-discharge and environment.
• 100 µA continuous (always-on beacon/sensor): ~7 months.
• 1 mA continuous (aggressive use): ~25 days.
• Pulse loads (key fobs, bike computers): Generally months to years depending on use; performance improves with fresh cells and clean contacts.

Note: Actual life varies with load profile, cut-off voltage, temperature, and brand.

Install in 1–3 Minutes

1. Power off the device if possible. Open the battery door carefully.
2. Verify size: the old cell or manual should read “CR2450.”
3. Observe polarity: match the “+” on the cell to the device diagram.
4. Clean contacts with a dry, lint-free cloth; remove any residue or corrosion.
5. Seat the coin cell flat; close the compartment fully and test the device.

Storage, Safety, and Disposal

• Child safety: Coin cells are a swallowing hazard. Store out of reach and in original packaging. Seek immediate medical attention if swallowed.
• Non-rechargeable: Do not recharge, short-circuit, crush, or expose to fire.
• Storage: Keep spares cool, dry, and in packaging; avoid loose storage with metal objects.
• Disposal: Tape the terminals of used cells and recycle per local guidelines or return to battery collection points.

Troubleshooting

• Device won’t power on: Confirm CR2450 size, polarity, and fully closed battery door; clean contacts.
• Short runtime: Check for background features (lights, beeps) you can disable; verify the cell is fresh and not mixed with older cells.
• Intermittent operation: Ensure the cell sits flat and the contact springs are not bent or contaminated.

FAQs

Can I replace a CR2450 with a CR2430?

No. Although the diameter matches, the CR2430 is thinner and may cause poor contact and shorter life. Use the size specified by the device.

What devices commonly use CR2450?

Keyless entry remotes, bike computers and sensors, certain medical instruments (per manufacturer), smart home transmitters, and compact LED beacons.

How long will a CR2450 last?

From weeks to several years depending on load and usage. Low-duty sensors can run for years; high continuous loads drain faster.

Is the Duracell CR2450 child-resistant?

Many coin cells ship in child-secure packaging. Check the product packaging in your region for specific safety features.

Can I use rechargeable 2450 cells?

Only if the device explicitly supports them. Rechargeable 2450 variants have different voltage profiles and much lower capacity per charge.