CR2032 vs BR2032
Same 20 × 3.2 mm size. CR2032 (Li-MnO2) is the consumer default with higher typical capacity; BR2032 (Li-CFx) is specified for wider temperature / long industrial RTC backup.
Last verified Aug 25, 2026
Interchangeable in many holders — follow the board or device datasheet for industrial use.
Fit can look fine while chemistry, drain class, or temperature rating is still wrong. Use the stamp on the old cell, then the rows that differ in the spec table — not the fact that both cells are round.
They share 3 V and 20 mm diameter, which is why CR2032 vs BR2032 looks interchangeable on a store shelf. Highlighted rows are the ones that change the purchase: chemistry, capacity.
Read physical fit before capacity. Extra milliamp-hours only help when the holder is built for that cell. A “better” spec in the wrong tray is a mechanical or voltage mismatch, not an upgrade.
| Spec | CR2032 | BR2032 |
|---|---|---|
| Chemistry | LiMnO2 | LiCFx |
| Nominal voltage | 3 V | 3 V |
| Diameter | 20 mm | 20 mm |
| Thickness | 3.2 mm | 3.2 mm |
| Outline | 20 × 3.2 mm | 20 × 3.2 mm |
| Typical capacity | 220–240 mAh | 190–210 mAh |
| Typical energy | 0.66–0.72 Wh | — |
| Typical weight | 3.1 g | — |
| Fresh open-circuit voltage | 3.2–3.4 V | — |
| Unused shelf life | ~10 years | ~10 years |
| Category | lithium-coin | lithium-coin |
| Common aliases | DL2032, ECR2032 | — |
If you searched BR2032 vs CR2032, you are on the same comparison with the names reversed. The difference between CR2032 and BR2032 batteries is not the word “vs” — it is the specs that do not match after you ignore the similar photos.
Even when the cans look related, CR2032 (LiMnO2) and BR2032 (LiCFx) are different product classes. Capacity, voltage sag, temperature range, and whether the cell can be charged all follow chemistry — not the photo on the listing.
Typical CR2032 capacity is 220–240 mAh. BR2032 is 190–210 mAh. Runtime only follows that gap inside the correct holder. Extra capacity in the wrong tray does not last longer — it often does not run at all.
CR2032 common for PC CMOS and consumer fobs
BR2032 preferred when datasheets call for temperature extremes
Coin and button codes are rulers, not brand slogans. The letters mark chemistry class. The digits encode size. CR2032 measures 20 × 3.2 mm; BR2032 measures 20 × 3.2 mm. Once you read the code that way, BR2032 vs CR2032 stops looking like a preference and starts looking like a fit check.
Sometimes. CR2032 may physically sit where BR2032 sat, but chemistry or drain class can still be wrong. Watches, meters, and charged circuits are where “it fits” is not enough.
If the door closes without force and the device asks for this chemistry, a quality CR2032 can work. If the datasheet named BR2032 for a reason — temperature, drain, or charge control — keep that code.
The same “sometimes” applies with the names reversed. Confirm chemistry and the movement or board chart, not just whether the can drops in.
A cheaper substitute that sags under load will look fine for a week and then make a watch run slow or a meter drift.
Retail packs hide the IEC size behind house codes. CR2032 also appears as DL2032, ECR2032. BR2032. Those prefixes do not change the outline unless the chemistry letters change (BR, LIR, ML, PR).
You do not need a full datasheet to settle CR2032 vs BR2032. You need the stamp, the tray, or a cheap pair of calipers. A store bin labeled only “button cell” or “3V lithium” will not do that work for you.
Do not install rechargeable LIR2032 unless the circuit is designed to charge it.
Do not stack cells, grind a can, or use foil as a permanent spacer to fake BR2032 with CR2032. Read the stamp, then the spec table. If the door will not close without force, you have the wrong height or diameter.
Often yes at room temperature. Keep BR when the datasheet requires it.
Yes. CR2032 vs BR2032 and BR2032 vs CR2032 are the same pair. Fit, voltage, and chemistry do not change when you flip the order.
Use this guide as a starting point, then confirm voltage, chemistry, and physical size with your device manual or the marking on the old cell.
Reviewed by PlainBattery Technical Review Desk on 2026-08-25. Checked: both model identities and dimensions, voltage and chemistry differences, physical fit, interchangeability conclusion and safety warnings.
Revision record: source citations and field-level review scope added September 11, 2026. See our sources and methodology and corrections policy.
