CR2025 vs CR2450

Both are 3 V lithium coin cells, but at 24.5 × 5 mm the CR2450 is far larger than the 20 × 2.5 mm CR2025 and holds about four times the charge.

Quick answer

No swap here. The CR2450 is wider and twice as thick as a CR2025, and holds roughly four times the power. Both give 3 volts, but a CR2450 will not go into a CR2025 holder and a CR2025 cannot bridge the contacts in a CR2450 one. Buy the code printed on the cell you removed.

Verdict:: Not interchangeable — different size class entirely
Interchangeable:: no

Side-by-side specifications

CR2025 compared with CR2450
Specification	CR2025	CR2450
Chemistry	Lithium	Lithium
Type	Coin Cell	Coin Cell
Nominal voltage	3 V	3 V
Diameter	20 mm	24.5 mm
Height	2.5 mm	5 mm
Typical capacity	150–170 mAh	560–620 mAh
Rechargeable	No	No
Also sold as	DL2025, BR2025	DL2450, BR2450

Size comparison

CR2025

Ø 20 mm · H 2.5 mm

CR2450

Ø 24.5 mm · H 5 mm

These cells do not share a footprint, so one will not sit correctly in the other's compartment.

Size

24.5 × 5 mm against 20 × 2.5 mm. The CR2450 is wider and exactly twice as thick — the largest gap in the common coin cell range.

Runtime

560–620 mAh against 150–170 mAh, close to a fourfold difference. Devices specified for a CR2450 expect that reserve.

Both are 3 V

Voltage is not the deciding factor for any CR-coded coin cell — they all run at 3 V nominal. Fit is what separates them.

Can I use a CR2450 instead of a CR2025?

Not directly. The CR2450 measures 24.5 × 5 mm against 20 × 2.5 mm for the CR2025, so it will not seat properly in the same compartment.

CR2025 specs →CR2450 specs →

Check before you swap. Batteries with similar dimensions are not always interchangeable. Always verify voltage, chemistry and the requirements printed in your device manual before fitting a replacement.

Related comparisons

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