Renata CR1216 Lithium Coin Cell (3 V, 12 x 1.6 mm)

The Renata CR1216 is a thin, 3-volt lithium coin battery designed for compact electronics that need dependable power in a minimal footprint. It excels in low-drain or intermittent-use devices where space is limited.

Key Specs

• Chemistry: Lithium Manganese Dioxide (Li‑MnO₂)
• Nominal Voltage: 3 V
• Size: 12 mm diameter x 1.6 mm height
• Typical Capacity: ~25 mAh
• Operating Temperature: −20°C to +60°C
• Compliance: Mercury‑free, RoHS compliant

Best Use Cases

• Car key fobs and small remote controls
• Thin wearables and fitness sensors
• Small medical or health devices (as specified by the manufacturer)
• Compact calculators or memory retainers with very low standby current

When to Choose vs. Avoid

• Choose if your device specifically calls for CR1216 and has low average current draw (microamp range) or brief pulse loads.
• Avoid if your device draws continuous current above ~0.1 mA, uses frequent wireless transmissions, or needs long runtime at higher loads—consider thicker cells like CR1220/CR1225/CR2032 if the device allows.

Runtime Guidance

Actual runtime depends on device load and duty cycle. As a rough guide:

• 1 µA average load: ~2.5–3 years
• 5 µA average load: ~6–8 months
• 20 µA average load: ~6–8 weeks

For frequent transmissions or LEDs/buzzers, expect shorter life due to pulse currents.

Compatibility & Equivalents

• Standard code: CR1216 (IEC)
• Common equivalents by brand: ECR1216 (Energizer), DL1216 (Duracell)
• Do not substitute with thicker cells like CR1220 (2.0 mm) or CR1225 (2.5 mm) unless your device explicitly supports them—the door may not close, or contacts may be stressed.
• BR1216 is a different chemistry (poly-carbon monofluoride); use only if specified by the device manufacturer.

Installation Tips

1. Confirm the marking “CR1216” in the device manual or on the old cell.
2. Insert with the correct polarity (+ side usually faces up).
3. Avoid shorting the cell; use non-metal tweezers if possible.
4. Clean contacts lightly if corroded and ensure the battery door closes flat.

Storage & Shelf Life

• Store in original packaging at 20–25°C, low humidity.
• Keep away from metal objects to prevent short circuits.
• Low self-discharge supports a long shelf life (typically 5–10 years under proper storage).

Safety Notes

• Coin cells are a choking and ingestion hazard. Keep away from children and pets.
• If swallowed, seek immediate medical attention or contact Poison Control.
• Do not recharge, disassemble, crush, or expose to heat.
• Tape the cell’s terminals before disposal or recycling.

FAQ

Is the CR1216 rechargeable?

No. CR1216 is a primary (non-rechargeable) lithium battery. Use only once and dispose/recycle properly.

Can I use a CR1220 or CR1225 instead?

Usually no. Those cells are thicker and may not fit or could damage the battery door or contacts. Use only the size specified by your device.

What brands are compatible with Renata CR1216?

Any reputable brand marked CR1216 should be dimensionally compatible. Equivalent codes include ECR1216 (Energizer) and DL1216 (Duracell).

How long will a CR1216 last in a key fob?

With typical household use, 1–2 years is common, but it varies by fob design and usage frequency.

What if my device specifies BR1216?

BR1216 uses a different chemistry optimized for certain temperatures and low-drain stability. Use BR1216 only if the device or manufacturer specifically requires it.