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CR1632 vs CR2032
CR1632 and CR2032 are not interchangeable. They differ in diameter (16 mm vs 20 mm). The CR2032 holds about 1.6× the energy of the CR1632 (225 mAh vs 140 mAh).
| CR1632 | CR2032 | |
|---|---|---|
| Type | lithium coin cell | lithium coin cell |
| Voltage | 3 V | 3 V |
| Size | 16 mm × 3.2 mm | 20 mm × 3.2 mm |
| Typical capacity | ≈ 140 mAh | ≈ 225 mAh |
| Rechargeable | no | no |
| Other codes | DL1632, ECR1632 | DL2032, ECR2032, BR2032, 5004LC |
Can I use CR2032 instead of CR1632?
No. Different width: 20 mm vs 16 mm.
Can I use CR1632 instead of CR2032?
No. Different width: 16 mm vs 20 mm.
Where each one is used
CR1632: many Toyota and Lexus smart keys; Bluetooth trackers such as recent Tile Mate models; tyre-pressure tools and small remotes.
CR2032: most modern car key fobs; Apple AirTag and other Bluetooth trackers; computer motherboard (CMOS / BIOS clock) battery; bathroom and kitchen scales.
Both sizes turn up in car key fobs, depending on the model, which is why people mix them up: check the code on the old cell.