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3 V Li/MnO2 coin

CR2430

BuyCR2430Lithium (CR) · 3 V · 24.5 × 3.0 mm

Safe swap, same cell: DL2430

Can I use one of these instead?

Check it at real sizeCompare with another code

CR2430: drawing from the dataset, diameter 24.5 mm, height 3.0 mmØ 24.5 mm3.0 mmTOPSIDE
Fig. 1 — CR2430. Outline only. Both views share one scale. The terminal step, seal and markings are not drawn.

3 V · 24.5 × 3 mm · Lithium manganese dioxide coin

Energizer sells this cell as CR2430. The drawing on that datasheet prints a 24.50 mm maximum and a 3.00 mm maximum, and the capacity line is 320 mAh to 2.0 V on 15 kΩ at 21°C. The designation line on the same sheet prints IEC-CR2425, which does not match a 3.0 mm height. Renata's scope chart lists CR2430 as 24.5 × 3.0 mm and 285 mAh. The outline used here is 24.5 × 3.0 mm, from the drawing and from Renata. The conflicting IEC code is recorded, not silently 'corrected'.

See the lead. Energizer's designation line prints IEC-CR2425; the drawing height maximum is 3.00 mm.

Ratings from the cited sheets
ChemistryLithium manganese dioxide coin
Nominal voltage3 V
Diameter × height24.5 × 3 mm
Energizer drawing maximums 24.50 mm and 3.00 mm, and Renata 24.5 × 3.0 mm. The designation line on the Energizer sheet prints IEC-CR2425.
Designation on the datasheetANSI / NEDA-5011LC, IEC-CR2425
WeightEnergizer 4.6 grams (0.16 oz.)

Can I substitute it?

Treat the Energizer designation line (IEC-CR2425) as a conflict on that sheet, not as permission to fit a 2.5 mm cell. The drawing maximum height is 3.00 mm. Do not file this cell under CR2425 in a holder spec.

Size check at real size

Lay the old cell on the outline. This shows the top outline (diameter) and the side outline (height) at 1:1 once the screen is calibrated.

Capacity

These are not one test repeated. Capacity varies by brand, load, temperature and cutoff.

SourcemAhTest as printed
Renata285Capacity column of the July 2016 scope chart.
Energizer320to 2.0 volts; rated at 15K ohms at 21°C

Cross-reference

Each code is printed on the cited chart. A shared outline is not, by itself, the same cell.

Where it is printedCode
DuracellDL2430

Devices named on the Energizer guide

Watches, medical devices, key fobs, electronics. See car key fobs, watches, medical devices.

Lithium manganese dioxide coin cells

A CR coin is a lithium/manganese dioxide primary cell. Panasonic's industrial catalog shows how the number is built: C is that chemistry, R means round, the next two digits are the diameter in millimetres, and the last two are the height in tenths of a millimetre. CR2032 is a 20 mm cell, 3.2 mm thick. CR2025 is the same diameter and 2.5 mm thick. CR2016 is 1.6 mm thick. The voltage does not change with the thickness. Energizer's CR2032 and CR2025 sheets both print a nominal 3.0 V, and Panasonic's standard CR line does too. What changes is how much lithium fits in the can, and whether the cell can reach the contact spring.

That is the whole of the CR2032-versus-CR2025 question. A 2025 will sit in a 2032 holder and rattle. The spring may still touch it on the bench and then drop out in a pocket. A 2032 will not go into a holder machined for 2.5 mm. Do not stack two thinner cells to fake the thickness, and do not add a shim of foil. Match the height printed on the dead cell.

Capacity is a test result, not a property of the four-digit code. Energizer rates its CR2032 at 235 mAh to 2.0 V on a 15 kΩ load at 21°C. Panasonic rates its CR2032 at 225 mAh. Those are both real, and they are not interchangeable as a single 'typical' figure. The page for each size lists the brand ratings we could read off a datasheet. Where a brand is missing, that brand has not been assigned a number here.

Energizer's coin sheets also carry a swallow warning. A lithium coin lodged in the oesophagus can burn through tissue in about two hours. Holders should need a tool, or two deliberate motions, to open. That is a design requirement on the datasheet, not a slogan.

Sources

Last verified 2026-10-29.