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CR2032 vs CR2450
CR2032 and CR2450 are not interchangeable. They differ in diameter (20 mm vs 24.5 mm), thickness (3.2 mm vs 5 mm). The CR2450 holds about 2.8× the energy of the CR2032 (620 mAh vs 225 mAh).
| CR2032 | CR2450 | |
|---|---|---|
| Type | lithium coin cell | lithium coin cell |
| Voltage | 3 V | 3 V |
| Size | 20 mm × 3.2 mm | 24.5 mm × 5 mm |
| Typical capacity | ≈ 225 mAh | ≈ 620 mAh |
| Rechargeable | no | no |
| Other codes | DL2032, ECR2032, BR2032, 5004LC | DL2450, ECR2450, 5029LC |
Can I use CR2450 instead of CR2032?
No. Different width: 24.5 mm vs 20 mm.
Can I use CR2032 instead of CR2450?
No. Different width: 20 mm vs 24.5 mm.
Where each one is used
CR2032: most modern car key fobs; Apple AirTag and other Bluetooth trackers; computer motherboard (CMOS / BIOS clock) battery; bathroom and kitchen scales.
CR2450: Ford and Lincoln intelligent access key fobs; bike computers and sports sensors; digital kitchen scales; wireless door and window sensors.
Both sizes turn up in digital bathroom scales, wireless doorbell buttons, car key fobs, depending on the model, which is why people mix them up: check the code on the old cell.