CR2032 battery reference
A CR2032 is a 3V lithium coin cell that is 20mm wide and 3.2mm thick.
Exact specs
| Type | CR2032 |
|---|---|
| Diameter | 20.0 mm |
| Thickness | 3.2 mm |
| Nominal voltage | 3V |
| Chemistry | Lithium manganese dioxide |
| Typical capacity | 210-240 mAh |
What devices commonly use it
Car key fobs, motherboard CMOS backup slots, bathroom scales, and small remotes often use CR2032 cells.
What it's interchangeable with
You can sometimes substitute a CR2025 for CR2032 only if the battery compartment and contact spring can handle the 0.7mm thickness difference and runtime is acceptable.
What it's NOT interchangeable with
It is not interchangeable with 1.5V button cells like LR44/SR44 because voltage and physical format are different.
Common mistakes
- Assuming CR2025 always fits in a CR2032 tray.
- Ignoring polarity marks when replacing.
- Mixing old and new cells in the same device.
Related standards
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