Renata CR2016 (Lithium Coin)

Overview

The Renata CR2016 is a 3V lithium manganese dioxide coin cell (IEC 2016: 20.0 mm diameter, 1.6 mm height) made for slim, low-to-moderate drain electronics. It delivers stable voltage for intermittent loads such as key fobs, calculators, digital thermometers, and select wearables that specify the 2016 size.

Use this battery if / avoid if

• Use if your device explicitly calls for CR2016 (also labeled DL2016/ECR2016/KCR2016).
• Use for low, steady loads and brief pulses (e.g., key fobs, watches specified for 2016, chest-strap heart rate monitors, small sensors).
• Avoid if your device can accept a thicker cell and needs longer runtime (CR2025/CR2032 offer more capacity).
• Avoid for sustained high-current draw; coin cells are not suited for continuous multi-milliamp loads.
• For high-temperature storage (e.g., >60°C), a BR2016 can hold voltage better but has lower pulse capability; only use if your device allows it.

Compatibility and equivalents

Equivalent size codes: CR2016, DL2016 (Duracell), ECR2016 (Energizer), KCR2016. These are interchangeable if the size is 2016.

Note: Some devices intentionally stack two CR2016 cells. Two in series provide 6V and are not replaceable by a single CR2032 (3V) unless the device specifically allows it.

Key specifications

• Chemistry: Lithium Manganese Dioxide (Li‑MnO2)
• Nominal voltage: 3.0 V (open-circuit typically ~3.2 V)
• Capacity: 75–90 mAh (to ~2.0 V at light loads)
• Operating temperature: approximately −20°C to +60°C (device dependent)
• Dimensions: 20.0 x 1.6 mm; mass: ~1.7 g
• Compliance: Mercury‑free; RoHS

Expected runtime (typical scenarios)

• Calculator or small remote: about 1–3 years with light daily use.
• Car key fob: roughly 6–24 months depending on transmission power and usage frequency.
• Watch or fitness strap (if specified): about 6–18 months.
• BLE trackers/sensors: varies widely by duty cycle and signal strength; check device guidance.

Installation and care

• Confirm size: Use CR2016 only; thicker cells (CR2025/CR2032) generally won’t fit and may damage the holder.
• Match polarity: The large flat side marked “+” faces the holder’s “+”.
• Clean contacts: If dull or oxidized, wipe with a dry lint‑free cloth; avoid solvents.
• Do not stack cells unless the device specifically requires it.
• Store spares in original packaging at 50–77°F (10–25°C), dry place; keep away from metal objects to prevent shorting.

Troubleshooting tips

• If a new cell drains quickly, check for stuck buttons, corroded contacts, or high drain modes (e.g., constant pairing/search in trackers).
• For pulse-heavy devices (key fobs), ensure the battery is fresh; weak cells can sag under load and cause intermittent failures.
• Check the manual if your device previously used two cells; replacing them with one thicker cell changes both voltage and fit.

Safety and recycling

• Keep coin cells away from children and pets; ingestion can cause severe internal burns within hours. If swallowed, seek immediate medical care.
• Do not recharge, short, crush, or incinerate.
• Recycle at an authorized battery collection point; do not dispose of in household trash.

FAQ