A useful size taxonomy
CR2016, CR2025 and CR2032 share a 20 mm diameter but rise from 1.6 to 3.2 mm in height. CR1616, CR1620 and CR1632 repeat that pattern at 16 mm.
Never substitute by diameter
Thickness changes contact and available internal volume. Use the full code required by the device.
Read diameter and height as a pair
The CR16 series includes 1616, 1620 and 1632; the CR20 series includes 2016, 2025 and 2032. CR2430 and CR2450 share a 24.5 mm published diameter but differ by 2 mm in height.
These families all sit at 3 V nominal in the current scope, so voltage cannot distinguish the near-sizes. The full dimensional code and device requirement do that work.
Use cases are examples
Key fobs, watches, sensors and compact electronics may use CR cells, but a device category never proves the required size. Two models of the same product type can use different heights or diameters.
Capacity statements remain product-specific and test-qualified. A thicker cell’s potential service advantage does not authorise its use in a compartment designed for a thinner one.
Safety and selection
Coin cells can cause severe injury if swallowed. Keep packaged and spent cells secured away from children, use intact child-resistant compartments and follow the official country route immediately if ingestion is suspected.
Canonical records
Showing 13 of 13 canonical records.
CR102510 × 2.5 mm · 3 V nominal · OtherCR121612.5 × 1.6 mm · 3 V nominal · OtherCR122012.5 × 2 mm · 3 V nominal · OtherCR161616 × 1.6 mm · 3 V nominal · OtherCR162016 × 2 mm · 3 V nominal · OtherCR163216 × 3.2 mm · 3 V nominal · OtherCR201220 × 1.2 mm · 3 V nominal · OtherCR201620 × 1.6 mm · 3 V nominal · OtherCR202520 × 2.5 mm · 3 V nominal · OtherCR203220 × 3.2 mm · 3 V nominal · OtherCR232023 × 2 mm · 3 V nominal · OtherCR243024.5 × 3 mm · 3 V nominal · OtherCR245024.5 × 5 mm · 3 V nominal · Other