Energizer CR2016 Batteries

Energizer CR2016 Batteries

Energizer CR2016 is a 3-volt lithium coin cell designed for devices that require a very thin power source. If your device specifies CR2016, it was engineered around a 20 mm diameter and 1.6 mm thickness—using the exact size ensures proper contact, reliable starts, and accurate readings.

Key Specs

Attribute	Details
Chemistry	Lithium manganese dioxide (primary, non-rechargeable)
Nominal voltage	3 V
Size code	CR2016 (≈ 20 mm diameter × 1.6 mm thickness)
Typical use	Low-to-moderate drain, intermittent bursts
Common devices	Watches, slim remotes, wearables, small sensors, calculators, medical accessories

When to Choose CR2016

• Use if your device explicitly lists CR2016 or requires an ultra-thin 1.6 mm coin cell.
• Best for compact designs where a thicker battery would stress the cover or gasket.
• Good match for devices that sleep most of the time and wake for short transmissions, beeps, or measurements.

CR2016 vs. CR2025 vs. CR2032

All three share a 20 mm diameter—thickness sets capacity and fit:

• CR2016: 1.6 mm thick; thinnest fit, lowest capacity.
• CR2025: 2.5 mm thick; mid-thickness, more capacity if the bay allows.
• CR2032: 3.2 mm thick; thickest, highest capacity for deeper bays.

Do not stack thinner cells to imitate a thicker one (e.g., two CR2016 in place of one CR2032). This can damage contacts, cause intermittent power, or create a safety risk.

Pros and Cons

• Pros: Ultra-slim profile; stable 3 V output; widely available; suitable for many compact devices.
• Cons: Lower capacity than thicker 20 mm cells; not suitable for high-drain or always-on devices.

Runtime Expectations

• Watches and small sensors: Often several months to a year, depending on features and alarms.
• Thin remotes/key fobs: Months of typical household use; heavy button use shortens life.
• Wearables: Varies widely with sampling rate and wireless activity; plan proactive replacements before trips or events.

Actual life depends on duty cycle, temperature, and contact condition. If reliability is critical (presentations, travel, races), replace on a schedule rather than waiting for a low-battery alert.

Compatibility and Fit

• Check the old battery stamp or device manual; install the exact code listed.
• A device designed for CR2016 is usually too shallow for CR2025/CR2032.
• If a device expects a thicker coin, a CR2016 may lose contact or reset under vibration.

Installation Steps

1. Confirm the size: CR2016.
2. Follow polarity markings; the flat face is typically “+”.
3. Wipe contacts gently with a dry, lint-free swab if tarnished.
4. Seat the cell flat; ensure the cover closes fully without force.
5. Test immediately (e.g., press a button, check display) to confirm proper contact.

Buying Guide

• Singles or twin-packs: One-off repairs and a spare.
• 3–10 packs: Households, clubs, classrooms with multiple devices.
• Dealer sleeves/case packs: Shops, clinics, and maintenance teams needing predictable replenishment.

Tip: If you service varied equipment, stock CR2016 alongside CR2025 and CR2032 to cover the common 20 mm sizes.

Storage

• Store cool, dry, and consistent; avoid heat and humidity.
• Keep in original packaging to prevent shorting and for quick identification.
• Use first-in, first-out (label the month/year received).

Troubleshooting

• Recheck size and polarity if the device remains unresponsive.
• Inspect and gently adjust battery contacts for proper tension.
• Reset or re-pair devices that lose state when fully powered down.
• Try a second fresh cell to rule out seating or contact issues.

Safety and Disposal

• Keep coin cells away from children and pets; ingestion can be dangerous.
• Do not recharge; CR2016 is a primary (non-rechargeable) battery.
• Avoid shorting—do not carry loose cells with coins or keys.
• Recycle or dispose of used cells at appropriate collection points.

FAQ

Is CR2016 the same as “a 3 V coin battery”?

Only if your device specifies CR2016. Many devices use 20 mm coins but require different thicknesses (CR2025 or CR2032). Match the code exactly.

Can I substitute CR2025 or CR2032?

No. Even though the diameter is the same, thickness differs. Using the wrong thickness can cause poor contact or damage.

How long will an Energizer CR2016 last?

It varies by device and usage. Expect months in slim remotes and small sensors; high-alert or always-on features reduce runtime.

What pack size should I buy?

Singles/twins for quick fixes; 4–10 packs for households; sleeves or case packs for service teams and facilities.

Why didn’t a fresh CR2016 fix my device?

Confirm the size and polarity, clean or adjust contacts, and reset/re-pair if the device lost its settings during the swap.