CR1620 vs CR1632 — What Is the Difference?
| CR1620 | CR1632 | |
|---|---|---|
| Voltage | 3V | 3V |
| Diameter | 16mm | 16mm |
| Thickness | 2mm | 3.2mm |
| Capacity | ~75mAh | ~140mAh |
| Chemistry | Lithium | Lithium |
| Common uses | some car key fobs, slim watches, small remotes | some car key fobs, Tile trackers, medical devices |
Are they interchangeable?
No — not interchangeableNo. They share the same 16mm diameter but CR1632 is 1.2mm thicker than CR1620. A CR1620 may sit loose in a CR1632 slot, and a CR1632 may be too thick for a CR1620 compartment.
The verdict
Check the code on your old battery. The thickness difference means they are not reliably interchangeable despite looking similar.
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