Renata CR2320 (Lithium Coin)

Renata CR2320 Lithium Coin Cell (3 V, 23 x 2.0 mm)

The Renata CR2320 is a 3 V lithium manganese dioxide (Li‑MnO2) coin cell designed for thin battery compartments that require the 23 mm diameter, 2.0 mm height format. Choose it only when your device explicitly specifies CR2320—common in key fobs, slim remotes, small sensors, and RTC/memory backup.

Key specs

• Chemistry: Lithium Manganese Dioxide (Li‑MnO2)
• Nominal voltage: 3 V (open‑circuit typically ~3.0–3.2 V)
• Typical capacity: 140–160 mAh (approx. 150 mAh)
• Size: 23.0 mm diameter × 2.0 mm height
• Operating temperature: about −22 to 140 °F (−30 to 60 °C)
• Shelf life: up to 8–10 years when stored at room temperature
• Construction: mercury‑free
• Rechargeable: no (primary cell)

When to choose it

• Your device, battery door, or PCB marking specifies CR2320.
• Low‑to‑moderate drain and intermittent loads (key fobs, sensors, RTC backup).
• You need a thin 2.0 mm coin cell with stable 3 V output and long shelf life.

Avoid or consider alternatives if

• Your device specifies a different size (e.g., CR2032 is 20 mm diameter; CR2325 is 2.5 mm thick). Dimensions must match exactly.
• The device has high continuous current or frequent high pulses (e.g., bright LEDs or continuous RF). If supported, a higher‑capacity size like CR2450 may be better.
• You need a rechargeable coin cell. Use only if the device supports a rechargeable type (e.g., LIR2320).
• The device operates for long periods at elevated temperatures. BR2320 (Li‑CFx) can offer better high‑temp stability for very low‑drain standby, but at lower capacity and different voltage behavior.

Compatibility and equivalents

Use only in devices marked CR2320. Equivalent manufacturer codes include DL2320 (Duracell) and ECR2320 (Energizer).

• Not interchangeable with: CR2032 (smaller diameter), CR2325 (thicker), or other sizes.
• BR2320 is a different chemistry; acceptable only if the device or manufacturer recommends it for your use case.

Expected runtime examples

Actual life depends on load, pulses, and temperature. Approximate continuous runtimes for a ~150 mAh cell:

Average load	Approx. runtime
10 µA (watch/sensor standby)	1.5–2 years
100 µA (low‑drain sensor)	~2 months
1 mA (moderate continuous)	~5–7 days

Intermittent devices like key fobs often last 1–3 years depending on use. High pulse currents can cause voltage drop; many devices specify a cutoff near ~2.0 V.

Installation tips

• Verify size code: CR2320 (23 × 2.0 mm).
• Match polarity: the flat top is “+”. Align with device markings.
• Handle with clean, dry hands or non‑metallic tweezers; avoid shorting the cell.
• If the device doesn’t power up, reseat the cell and clean contacts with isopropyl alcohol.
• Do not stack coin cells or mix old and new batteries.

Storage, safety, and recycling

• Store in original packaging at 50–77 °F (10–25 °C), low humidity, away from metal objects.
• Keep out of reach of children. Coin cells are a choking and ingestion hazard—seek immediate medical attention if swallowed.
• Do not recharge, crush, disassemble, expose to fire, or short‑circuit.
• Tape terminals before disposal and recycle at an approved battery collection point.

Troubleshooting quick checks

• Reduced remote range, missed sensor reports, or dim LEDs usually indicate a weak battery—replace with a fresh CR2320.
• New cells typically measure ~3.0–3.2 V open‑circuit. Significantly lower readings suggest depletion or damage.
• Cold conditions can reduce available capacity; warm to room temperature and retest.

FAQ

Can I use a CR2325 or CR2032 instead of a CR2320?

No. CR2325 is thicker (2.5 mm) and CR2032 is smaller in diameter (20 mm). Use the exact size your device specifies.

Is the CR2320 rechargeable?

No. CR2320 is a primary (single‑use) lithium coin cell. Only use rechargeable cells if your device explicitly supports them.

What are equivalent part codes?

CR2320 (IEC), DL2320 (Duracell), and ECR2320 (Energizer) are compatible for the 2320 size.

How long will it last in a key fob?

Typically 1–3 years, depending on usage frequency, transmission power, and temperature.