Duracell CR2430 Lithium Coin Battery (3V)

The Duracell CR2430 is a 3-volt lithium coin cell used in automotive key fobs, compact security sensors, wearables, medical devices as specified by the manufacturer, and other electronics that require a 24 mm coin cell with 3.0 mm height. If your device or the old battery reads “CR2430” (or “DL2430” for Duracell), this is the correct size.

Quick specs

• Chemistry: Lithium manganese dioxide (Li‑MnO₂)
• Nominal voltage: 3V
• Size: 24 mm diameter × 3.0 mm height (CR2430)
• Typical capacity: ~270–300 mAh (varies by brand and load)
• Operating temp (typical for Li‑MnO₂): −22°F to 140°F (−30°C to 60°C)
• Cross reference: CR2430, DL2430

When to choose (and when to avoid)

• Choose CR2430 if: Your manual or old battery specifies CR2430/DL2430; you need more runtime than 20 mm cells (e.g., CR2032) but a slimmer fit than CR2450.
• Avoid CR2430 if: The device requires CR2450 (thicker), CR2032/2025 (smaller diameter), or a rechargeable coin cell. Do not force a different size or chemistry.
• Medical devices: Use only what the manufacturer specifies.

Expected runtime examples

• Key fobs and car remotes: About 1–3 years under normal use.
• Wireless security sensors: Roughly 6–24 months depending on transmission frequency and temperature.
• LED indicators/beacons (continuous on): Tens of hours, depending on LED and drive current.

Actual life depends on device load, duty cycle, and temperature. Cold weather can reduce runtime temporarily.

Installation steps

1. Confirm the size: the device or old cell must read CR2430/DL2430.
2. Match polarity: align the “+” side with the symbol inside the compartment.
3. Clean contacts: wipe springs/pads with a dry, lint-free cloth.
4. Seat flat: the cell should fit without bending clips or forcing the door.
5. Test immediately: verify operation (e.g., key fob at close range).

Compatibility and alternatives

• Not interchangeable: CR2430 differs in thickness/diameter from CR2450, CR2032, CR2025, and CR2016.
• BR2430 (Li‑CFx): May be preferred for very low-drain, high-temperature applications if specified by the device.
• Rechargeable lookalikes (e.g., LIR2430): Higher voltage and different behavior. Use only if your device explicitly supports rechargeables.

Storage, safety, and disposal

• Store sealed in original packaging in a cool, dry place; avoid loose storage with metal objects.
• Keep out of reach of children. If swallowed, seek immediate medical attention—do not induce vomiting.
• Do not recharge, short, or heat above recommended temperatures.
• When discarding, tape over both sides of the cell and recycle at a battery drop-off location where available.

Pros and cons

• Pros: Good capacity for its size, stable 3V output, wide availability.
• Cons: Not rechargeable; lower capacity than thicker CR2450; not interchangeable with 20 mm cells.

FAQs

Is CR2430 the same as DL2430?

DL2430 is Duracell’s designation for their CR2430. The size and voltage are the same.

Can I replace a CR2450 with a CR2430?

No. CR2450 is 5.0 mm thick, while CR2430 is 3.0 mm. Using the wrong thickness can cause poor contact or a battery door that won’t close.

How can I tell the battery is low?

Common signs include reduced remote range, intermittent sensor alerts, or dim/slow LEDs. Many devices show a low-battery icon.

Should I store coin cells in the refrigerator?

Not recommended. Room-temperature storage in a dry place is sufficient. Avoid moisture and temperature extremes.

Can I mix old and new coin cells?

No. Use a single fresh cell of the correct size and chemistry.