The CR2032 is a common lithium coin cell battery. Here are its key specifications:
Key Characteristics:
- Nominal Voltage: 3V
- Chemistry: Lithium-Manganese Dioxide (Li/MnO2)
- Diameter: 20mm
- Height: 3.2mm (hence the name CR2032)
- Typical Capacity: ~220-225mAh
- Non-rechargeable (Primary cell)
Common Uses:
- Watches
- Car key fobs
- Small electronic devices
- Medical devices
- Calculators
- Motherboard CMOS batteries
Advantages:
- Long shelf life (5-10 years)
- Stable voltage output
- Compact size
- Wide temperature operation range
Limitations:
- Limited current output (typically max 3mA continuous)
- Cannot be recharged
- Relatively expensive compared to other battery types
- Environmental disposal concerns due to lithium content
NOTE
The “CR” in CR2032 stands for Lithium Chrome, “20” refers to the diameter, and “32” indicates the 3.2mm height.