Duracell CR2016 Lithium Coin Battery (3V) for Slim Devices

The Duracell CR2016 delivers reliable 3V power in an ultra-thin form factor for devices designed with minimal depth. It’s a common choice for key fobs, fitness trackers, calculators, digital thermometers, and compact sensors that require the exact CR2016 size.

At a Glance

• Voltage: 3V
• Size: 20 mm diameter × 1.6 mm height
• Chemistry: Lithium manganese dioxide (Li‑MnO₂)
• Standard code: CR2016 (cross references may include DL2016, ECR2016)
• Typical capacity range (varies by brand/load): ~70–90 mAh

When to Choose CR2016

• Use if: Your device or original battery explicitly states CR2016 or 2016.
• Use if: The battery compartment is very shallow and requires a 1.6 mm thick cell.
• Avoid if: Your device specifies CR2025 or CR2032—these are thicker and typically won’t fit.
• Avoid if: The device requires a rechargeable coin cell (e.g., LIR2016); CR2016 is non-rechargeable.

Compatibility and Alternatives

CR20xx cells share a 20 mm diameter but differ in thickness and capacity. Always match the exact code your device specifies.

Tip: If the door won’t close or contacts don’t align, you likely have the wrong thickness.

Installation Checklist

1. Confirm the code: Check the old cell or device manual for CR2016.
2. Observe polarity: Align the “+” side with the device diagram (often face-up).
3. Clean contacts: Wipe with a dry, lint-free cloth to remove oils and dust.
4. Seat securely: The cell should lie flat without rocking before closing the compartment.
5. Test immediately: Activate the device to verify a solid connection.

Runtime Expectations (Typical)

• Key fobs/transmitters: About 6–18 months depending on usage frequency and signal strength.
• Fitness trackers/sensors: Weeks to several months; continuous monitoring shortens runtime.
• Calculators/low-drain electronics: Many months to 1+ year with intermittent use.

Actual runtime varies with device load, duty cycle, temperature, and signal transmission strength.

Storage and Safety

• Store sealed: Keep spares in original packaging in a cool, dry place. Use by the date code for best results.
• Avoid short circuits: Don’t carry loose coin cells with keys or coins.
• Keep away from children and pets: Coin cells are small and hazardous if swallowed. If ingestion is suspected, seek medical attention immediately.
• Do not recharge: CR2016 is a primary (single-use) battery.
• Dispose/recycle properly: Follow local battery recycling guidelines.

Troubleshooting

• Device won’t power on: Recheck polarity, ensure the door is fully closed, and clean contacts.
• Intermittent operation: Verify the cell sits flat; gently adjust contact tabs if bent (consult device manual).
• Short runtime: High-drain use, extreme cold, or an aging device may reduce life; replace with a fresh, in-date CR2016.

FAQs

Can I replace a CR2016 with a CR2025 or CR2032?

No. They are thicker and typically won’t fit. Use the exact size specified by your device.

What temperatures can CR2016 typically handle?

Many lithium coin cells are rated for roughly -4°F to 140°F (-20°C to 60°C). Check packaging or the device manual for exact ratings.

Does brand affect runtime?

Yes. Capacity and performance vary by manufacturer, device load, and storage conditions. Choose reputable brands and fresh stock.

How long is the shelf life?

Properly stored lithium coin cells often retain charge for many years (commonly cited 8–10 years). Verify the date code and follow storage best practices.

Is CR2016 rechargeable?

No. Use only once. If your device specifies a rechargeable coin cell, look for compatible rechargeable models (e.g., LIR-series) as indicated by the manufacturer.