Duracell CR1616 Lithium Coin Battery — Ultra-Slim 3V Power for Key Fobs and Wearables

The Duracell CR1616 is a thin, 3-volt lithium coin cell designed for compact electronics that demand dependable starts and steady voltage in the smallest possible footprint. You’ll see CR1616 specified in automotive key fobs, fitness trackers, medical sensors (as directed by the device maker), computer accessories, and miniature remotes. If your original battery or manual reads “CR1616,” choosing the correct size ensures proper contact pressure, predictable runtime, and reliable day-to-day performance without forcing the battery door or compromising connections.

Why Choose CR1616?

• Stable 3V output: Delivers consistent voltage for RF transmitters, digital sensors, and memory backup functions.
• Ultra-slim form factor: 16 mm diameter by 1.6 mm thickness—ideal where depth is limited.
• Robust shelf life: Lithium chemistry helps spares stay ready for years when stored properly.
• Temperature resilience: Performs across everyday hot/cold swings common to vehicles and outdoor accessories.
• Leak-resistant build: Added confidence for delicate contact pads and small circuit boards.

Common Applications

• Automotive keyless entry remotes and anti-theft fobs
• Fitness trackers, heart-rate straps, and compact wearables
• Medical instruments and sensors (as specified by the manufacturer)
• Tiny remotes, bike computers, and digital thermometers
• Backup memory for small electronics

Technical Snapshot

• Chemistry: Lithium manganese dioxide (Li-MnO₂)
• Nominal voltage: 3 V
• Dimensions: 16 mm diameter × 1.6 mm height
• Standard code: CR1616 (primary, non-rechargeable)

CR1616 vs. CR1620 vs. CR1220

CR1616 shares its 16 mm diameter with CR1620 but is thinner (1.6 mm vs. 2.0 mm). CR1220 is smaller in diameter (12 mm) but equally thick (2.0 mm). Using the wrong size can cause poor contact, a door that won’t close, or shorter runtime. Always match the exact code printed on the original battery or the device’s documentation.

Installation Guide

1. Confirm the code: Ensure the device or old battery specifies “CR1616.”
2. Observe polarity: The “+” face typically points up in coin holders—follow the diagram in your device.
3. Clean contacts: Wipe pads gently with a dry, lint-free cloth to remove oils and dust.
4. Seat the cell flat: Avoid bending or forcing; the door should close smoothly.
5. Function test: For remotes, test at close range to confirm consistent activation.

Maximizing Runtime

• Use the exact size and chemistry the manufacturer specifies.
• Power devices down when not in use, if supported.
• Limit unnecessary lights, tones, or frequent wake events.
• Keep contact surfaces clean to minimize resistance and voltage drop.

Troubleshooting

• No power after replacement: Re-check polarity and seating; verify the device actually calls for CR1616.
• Intermittent range: Reseat the battery and confirm the door latches fully for firm contact.
• Short life: Frequent transmissions, cold weather, or continuous sensor polling increase consumption.

Safety & Storage

• Store sealed in original packaging in a cool, dry place.
• Do not keep loose coin cells with keys or coins (short-circuit risk).
• Keep out of reach of children and pets; seek immediate care if swallowed.
• Recycle or dispose of used coin cells according to local rules.

FAQs

Is CR1616 rechargeable?

No. Use only primary CR1616 cells unless your device explicitly requires a rechargeable chemistry.

Can I use CR1620 instead?

Not recommended. Although the diameter matches, CR1620 is thicker and may not fit; if it does, it can stress the holder or door.

What do the numbers mean?

“CR” indicates lithium-manganese chemistry; “16” is the diameter in millimeters; “16” indicates 1.6 mm thickness.

Summary

Duracell’s CR1616 provides ultra-slim, stable 3-volt power for key fobs, wearables, and miniature electronics. Match the exact size, install with correct polarity, and store spares properly to keep essential devices ready when you need them.