Maxell CR2016 Battery

Maxell CR2016 Battery — Thin 3V Power for Slim Devices

The Maxell CR2016 is a primary (non-rechargeable) lithium manganese dioxide coin cell designed for compact electronics that require a thin 3V battery. It fits shallow compartments in watches, keyless remotes, calculators, and small sensors while delivering stable voltage and dependable, low-drain performance.

Key Specs

• Type: CR2016 (IEC)
• Chemistry: Lithium Manganese Dioxide (Li‑MnO2), primary
• Nominal Voltage: 3 V
• Typical Capacity: ~90 mAh (varies by device load and conditions)
• Dimensions: 20 mm diameter × 1.6 mm height
• Approx. Weight: ~1.8 g
• Operating Temperature: −20 °C to +60 °C

When to Choose This Battery

• Use if your device specifically calls for CR2016 or requires an ultra‑thin 20 mm coin cell.
• Use for low to moderate, intermittent loads (e.g., watches, key fobs, calculators, small remotes).
• Avoid if your device specifies thicker cells (CR2025/CR2032) or demands continuous high current draw.

Compatibility and Cross‑References

• Also labeled as: CR2016, ECR2016; equivalent to DL2016 in other brands.
• Not the same as: CR1616 (smaller diameter), CR2025/CR2032 (thicker).
• Do not stack two CR2016 cells to replace one CR2032—this is unsafe and can damage the device.

Typical Runtimes (Estimates)

• Watches: ~1–3 years (model and features dependent).
• Keyless entry remotes: ~6–18 months based on use frequency and range.
• Calculators and small remotes: ~1–2 years under light, intermittent use.
• Small LEDs/sensors/toys: hours to months depending on load and duty cycle.

Installation (2–5 minutes)

1. Open the battery compartment using the appropriate tool (small screwdriver or coin) and note polarity.
2. Remove the old cell; avoid bending contacts. Clean light oxidation with a dry cloth if needed.
3. Insert the new CR2016 with the + side facing the marked polarity (usually up).
4. Close the compartment securely and test the device.

Storage and Safety

• Store in a cool, dry place (ideally 10–25 °C), away from humidity and direct heat.
• Keep coin cells away from children and pets; ingestion is a medical emergency.
• Tape the terminals of spent cells before disposal to reduce short‑circuit and ingestion risks.
• Do not recharge, crush, disassemble, or incinerate.
• Recycle at approved battery collection points.

Alternatives and Selection Tips

If your device physically accepts a thicker battery (check the manual), a CR2025 or CR2032 offers higher capacity for longer runtimes. Otherwise, use only a CR2016. For best results, install a fresh, brand‑name cell and avoid mixing old and new batteries in multi‑cell devices.

Size and Capacity Comparison

Battery	Diameter	Thickness	Typical Capacity	Fit Notes
CR2016	20 mm	1.6 mm	~90 mAh	Fits very shallow compartments
CR2025	20 mm	2.5 mm	~150–170 mAh	Thicker; only if device allows
CR2032	20 mm	3.2 mm	~210–240 mAh	Thickest; most capacity

Troubleshooting

• New battery, device still dead: verify polarity, clean contacts, and ensure springs/clips make firm contact.
• Short life: high usage (e.g., frequent remote presses) or a device designed for a higher‑capacity cell; check for stuck buttons or constant transmit.
• Intermittent operation: contacts may be loose or oxidized; reseat the cell and gently adjust contact tension if accessible.

FAQ

Is the Maxell CR2016 rechargeable?

No. CR2016 is a primary lithium cell and must not be recharged. Use only once and recycle when depleted.

Can a CR2016 replace a CR2025 or CR2032?

Generally no. Those cells are thicker and hold more energy. Use the size specified by your device to ensure proper fit and runtime.

What does “CR” mean?

“CR” identifies a lithium manganese dioxide chemistry coin cell. The numbers indicate size: 20 mm diameter, 1.6 mm thickness.

How can I tell when it’s depleted?

Symptoms include a dim or unresponsive display, reduced remote range, or timekeeping drift. A voltage under ~2.8 V under light load suggests replacement.

Any handling tips?

Handle by the edges, avoid touching both faces with bare fingers, and install promptly after opening the package to minimize self‑discharge.