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CR2032 vs CR2016 battery
No. CR2032 and CR2016 share the 20.0 mm diameter and the 3 V rating, but CR2032 is 3.2 mm thick and CR2016 is 1.6 mm, a 1.6 mm difference. Do not swap them.
CR2032 → CR2016
Different thickness: do not swap
A thinner cell can lose contact with the spring and drop out. A thicker one will not close. Do not pad it with foil or stack cells.
The difference in numbers
| CR2032 | CR2016 | Difference | |
|---|---|---|---|
| Diameter, mm | 20.0 | 20.0 | same |
| Height, mm | 3.2 | 1.6 | -1.6 mm |
| Nominal voltage | 3 V | 3 V | same |
| Chemistry | Lithium manganese dioxide coin | Lithium manganese dioxide coin | same family |
| Capacity on the cited sheets | 225 mAh (Panasonic) and 235 mAh (Energizer) | 90 mAh (Panasonic) and 100 mAh (Energizer) | brand ratings, not one test |
What the numbers mean
Both are 3 V lithium coins 20 mm across. Following Panasonic's naming rule, the last two digits are the height in tenths of a millimetre: CR2032 is 3.2 mm thick, CR2016 is 1.6 mm. That 1.6 mm is half the cell. CR2032 is rated 225 mAh (Panasonic) and 235 mAh (Energizer) on the cited sheets, CR2016 90 mAh (Panasonic) and 100 mAh (Energizer).
A CR2016 in a CR2032 holder can lose contact, and a CR2032 will not fit a CR2016 slot. Two CR2016 cells stacked are 3.2 mm thick, but they are also 6 V, twice what a CR2032 device expects.
Other codes printed for CR2032: DL2032, KECR2032, 5004LC. For CR2016: DL2016, 5000LC.
Both cells at real size
Lay the old cell on the outlines. CR2032 is the solid shape, CR2016 the dashed one, at 1:1 once the screen is calibrated.
Left: top outlines on one centre. Right: side outlines on one baseline. Drawn from the figures in the table, not a photograph.
Calibrate this screen
Screens scale pages differently, so true size is only true after calibration. Hold a bank card or ID card (85.60 mm wide, ISO/IEC 7810 ID-1) against the bar and slide until the bar is exactly as wide as the card.
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When printing, set scale to 100% or Actual size, not Fit to page.
Open CR2032Open CR2016Compare other codes
More side-by-side pages: CR2025 vs CR2032 · LR44 vs 357 · 377 vs 376 · CR2450 vs CR2032. All codes in one table: battery equivalent chart.
Sources
- Panasonic coin-type lithium batteries lineup, September 2022 Panasonic Energy, checked 2026-10-29
- Panasonic industrial battery catalog (model-number example and BR series title) Panasonic Energy, checked 2026-10-29
- Energizer CR2032 product datasheet (cr2032.pdf) Energizer, checked 2026-10-29
- Renata scope of supply, consumer, part no. ZW9843, version 07.2016 Renata SA, checked 2026-10-29
- Energizer CR2016 product datasheet (cr2016.pdf) Energizer, checked 2026-10-29