Maxell CR1616 3V Lithium Coin Cell

The Maxell CR1616 is an ultra-slim 3V lithium coin battery designed for compact devices that need reliable, low-drain power. It is commonly used in watches, keyless entry remotes, calculators, and small medical and fitness devices. Choose it when your device explicitly specifies CR1616.

Key Specs

Model	Maxell CR1616
Chemistry	Lithium Manganese Dioxide (Li‑MnO2)
Nominal Voltage	3V
Typical Capacity	~55 mAh (50–60 mAh typical)
Size (D × H)	16.0 × 1.6 mm
Weight	~1.1 g
Operating Temp	-20°C to +60°C (-4°F to +140°F)
Standards / Cross-Refs	IEC: CR1616; Equivalents: DL1616, ECR1616

When to Choose This Battery

• Use if your device label, manual, or old cell reads CR1616 (16 mm diameter and 1.6 mm thick).
• Good for low-drain or intermittent-use devices: watches, car key fobs, calculators, small sensors, and trackers.

Avoid If

• Your device specifies a different thickness (e.g., CR1620 or CR1632). Even with the same diameter, wrong thickness can cause poor contact or damage.
• You need a rechargeable option. CR1616 is non-rechargeable; do not attempt to recharge.

Performance Notes

• Stable 3V output with a flat discharge curve helps devices operate consistently until end of life.
• Low self-discharge supports long shelf life when stored at room temperature in original packaging.
• Leak-resistant construction helps protect delicate electronics.

Approximate Use Cases and Expectations

• Watches: typically 1–2+ years depending on features (alarms, lighting) and temperature.
• Car key fobs: often 1–2 years with normal use; heavy use or extreme cold shortens life.
• Calculators/small sensors: many months to multiple years depending on duty cycle and standby current.

For a quick estimate: runtime (hours) ≈ capacity (mAh) ÷ average load (mA). Example: at 0.01 mA average draw, ~55 mAh provides about 5,500 hours (~7.5 months). Real-world results vary with pulse loads and temperature.

Compatibility and Alternatives

• Direct replacements: CR1616, DL1616 (Duracell), ECR1616 (Energizer) are generally cross-compatible.
• If more capacity fits: CR1620 (2.0 mm thick) or CR1632 (3.2 mm thick) offer higher capacity but will not fit devices designed for 1.6 mm thickness.
• Always match the size code printed on your existing battery or in the device manual.

Replacement Guide

1. Power off the device if possible. Open the battery compartment carefully (use a precision screwdriver or coin per the manual).
2. Note polarity. The “+” side usually faces up.
3. Remove the old cell and insert the new CR1616 in the same orientation without touching both faces with bare fingers (use a tissue or gloves).
4. Close the compartment securely and test the device.

Storage & Safety

• Store in a cool, dry place at room temperature; keep cells in original packaging until use.
• Keep out of reach of children and pets. Coin cells are a choking and ingestion hazard. Seek immediate medical attention if swallowed.
• Do not mix old and new cells or different brands/chemistries in one device.
• Do not recharge, puncture, short, or expose to fire.
• Recycle at an approved battery collection point. Tape terminals before disposal to prevent shorting.

FAQ

Are CR1616 and CR1620 interchangeable?

No. They share the same 16 mm diameter, but CR1620 is thicker (2.0 mm vs. 1.6 mm). Use only the size your device specifies.

Which side is positive?

The flat side with the “+” marking is positive. The rounded side is negative.

Can I recharge a CR1616?

No. CR1616 is a primary (non-rechargeable) lithium cell. Charging can cause leakage or rupture.

How long is the shelf life?

When stored at room temperature in original packaging, lithium coin cells typically retain useful charge for many years (often 5+). Actual shelf life varies with storage conditions.

What are common cross-reference codes?

CR1616 (IEC), DL1616 (Duracell), and ECR1616 (Energizer) are commonly used equivalents. Always verify size and voltage.