Coin cells · 3 V
CR2032equivalents
The CR2032 is also sold as DL2032, ECR2032 and 5004LC. They are the same cell under different brand and standard names, so any of them fits.
Same battery, other names
- DL2032
- ECR2032
- 5004LC
Size and specs
- Voltage
- 3 V
- Size
- 20 × 3.2 mm
- Chemistry
- Lithium manganese dioxide.
- Capacity
- about 220 mAh
- Type
- Coin cells
What uses a CR2032
Typical devices and how long a fresh set usually lasts. Yours may differ.
| Device | Takes | Lasts |
|---|---|---|
| AirTag | 1 × CR2032 | about a year |
| Key finder tag | 1 × CR2032 | about a year |
| Car key fob | 1 × CR2032 | about 3 years |
| Garage remote | 1 × CR2032 | about 2 years |
| Room thermometer | 1 × CR2032 | about 2 years |
| Kitchen scale | 1 × CR2032 | about a year |
| Door sensor | 1 × CR2032 | about 2 years |
| Glucose meter | 2 × CR2032 | about a year |
| LED candles | 1 × CR2032 | about 3 months |
| Bike computer | 1 × CR2032 | about a year |
CR2032 vs CR2025, CR2016 and CR2450
Batteries people mix up with the CR2032. Close, but not the same.
| Battery | Size, voltage | Difference |
|---|---|---|
| CR2032 | 20 × 3.2 mm3 V | This page. |
| CR2025 | 20 × 2.5 mm3 V | Same 20 mm diameter, but 2.5 mm thick. It often works in a CR2032 slot if the contacts press firmly, but it holds less charge. |
| CR2016 | 20 × 1.6 mm3 V | 1.6 mm thick. Two CR2016 stacked make 6 V, not a CR2032. Never stack them in a 3 V device. |
| CR2450 | 24.5 × 5 mm3 V | Wider (24.5 mm). Same 3 V, but it won't fit. |
Good to know
- DL2032 is Duracell's name, ECR2032 is Energizer's and 5004LC is the ANSI code. They're all the same CR2032.
- BR2032 is the same size with a different lithium chemistry. It copes better with heat and fits, but it can't deliver as much current, so it's best in low-drain devices.
- LIR2032 and ML2032 are rechargeable and run at a different voltage. Only use them where the device says so.
- Apple says some CR2032 cells with a bitter coating may not work in an AirTag, depending on where the coating sits on the cell. If a new cell doesn't wake your AirTag, try one without a coating.
- Keep coin cells away from children. A swallowed coin cell can burn through the throat within hours, so treat it as an emergency and get help straight away.
Questions
What is the equivalent of a CR2032 battery?
The CR2032 is also sold as DL2032, ECR2032 and 5004LC. They are the same cell under different brand and standard names, so any of them fits.
What size is a CR2032 battery?
20 × 3.2 mm, 3 V. Lithium manganese dioxide.
What uses a CR2032 battery?
Common devices include airtag, key finder tag, car key fob, garage remote, room thermometer, kitchen scale, door sensor, glucose meter, led candles and bike computer.
Can I use a CR2025 instead of a CR2032?
Often, yes, as a stopgap. Both are 3 V and 20 mm wide, but the CR2025 is 0.7 mm thinner, so it may not touch the contacts firmly, and it holds about a quarter less charge. Swap in a CR2032 when you can. It doesn't work the other way: a CR2032 is too thick for a CR2025 slot.
What does CR2032 mean?
C is the chemistry (lithium manganese dioxide), R means round, 20 is the diameter in millimetres and 32 is the thickness in tenths of a millimetre: 3.2 mm.
Battery Inventory for iPhone and iPad
Never look up the CR2032 again.
Battery Inventory remembers which battery every device in your home takes, reminds you when one is due, and counts the spares in your drawer, so you buy the right cell before the old one dies. The finder in the app knows every code on this page. Search any of them, or point the camera at a coin cell to read it.
- Battery change reminders, free
- Monthly smoke and CO alarm test reminders
- A spares drawer and shopping list
- Cordless tool packs and chargers too
No account needed. Smoke and CO alarm features are reminders only: the app can't see or test your alarms.
