The CR2032 Lithium Coin Cell (3V) is a compact, high-energy, and long-lasting power source ideal for a wide variety of low-power electronic applications. This 20mm diameter, 3.2mm thick button cell provides a stable 3V output and is widely used in devices that require memory backup, clock functionality, or small, consistent power delivery.
Thanks to its long shelf life (up to 10 years in storage) and leak-resistant design, the CR2032 is a trusted choice for everything from consumer electronics to embedded systems and DIY projects.
| Property | Value |
|---|---|
| Model | CR2032 |
| Battery Type | Lithium Coin Cell |
| Nominal Voltage | 3V |
| Capacity | ~220mAh (varies by manufacturer) |
| Diameter | 20 mm |
| Height/Thickness | 3.2 mm |
| Chemistry | Lithium Manganese Dioxide (Li-MnO2) |
| Operating Temp | -20°C to +60°C |
| Weight | ~3 grams |
| Shelf Life | Up to 10 years |
CMOS/BIOS backup (motherboards)
Watches and clocks
Calculators
Car remotes and key fobs
Fitness trackers
Medical devices
Toys and small gadgets
Arduino/ESP32 projects (RTC modules, sensors, etc.)
1 × CR2032 Lithium Coin Cell Battery (3V)
Do not recharge – this is a non-rechargeable battery
Keep out of reach of children – risk of swallowing
Dispose of properly according to local regulations
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