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Coin lithium (CR)

CR2330 battery: equivalents & specs

The CR2330 is a 3 volt lithium coin cell, 23 mm across and 3 mm thick, packing 255 to 265 mAh. It is the high-capacity member of the 23 mm family, used in some smart key fobs, wireless sensors and electronic shelf labels.

CR2330 battery drawing: 23 mm across, 3 mm thick CR2330 3V + ⌀ 23 mm 3 mm
CR2330, face and side profile, drawn to scale: 23 mm across, 3 mm thick.
Voltage
3 V
Size (D×H)
23 × 3 mm
Chemistry
Lithium manganese dioxide (Li/MnO2)
Capacity
255-265 mAh

Same battery, other names

Every code below is the exact same cell as CR2330. Any of them will fit and work identically.

DL2330BR2330 (wide-temp variant)

Compatible replacements

  • CR2325: Thinner 23 mm sibling with about 190 mAh.

Buying and replacement notes

Capacity per footprint is this cell's selling point: it nearly matches the popular CR2450 while being 1.5 mm narrower and 2 mm thinner. Some Japanese and Korean market fobs use it where European models fit a CR2450. The two are not interchangeable, so check the molding in the fob before assuming.

Commonly used in

smart keys (some Asian markets)sensorsmemory backupe-ink shelf labels

Need a replacement?

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⚠️ Keep away from children. Swallowed button batteries, especially 20 mm lithium coins, cause severe injury within hours. If a child swallows one, call the 24/7 National Battery Ingestion Hotline (US) at 800-498-8666 or poison control at 800-222-1222 immediately. What every parent should know.

Frequently asked questions

Is the CR2330 the same as the CR2450?
No. The CR2330 is 23 x 3.0 mm at about 260 mAh; the CR2450 is 24.5 x 5.0 mm at about 600 mAh. Some devices offer versions for each, but the holders differ and the cells cannot be swapped. Confirm against the old cell's marking.
What uses a CR2330 battery?
Certain smart keys (notably some Asian-market vehicles), wireless sensor nodes, e-ink shelf labels and memory backup circuits. It is chosen when a design needs more than CR2032 capacity without the CR2450's 5 mm height.
How long does a CR2330 last?
In a smart key, roughly two years; in low-power sensors and shelf labels, five years or more is common. Like all lithium coin cells it loses only about 1 percent of charge per year sitting idle, so nearly all its life goes to the device.

More Coin lithium (CR) cells

CR927CR1025CR1130CR1216CR1220CR1225BR1225CR1616CR1620CR1632