Thickness — 3 mm vs 5 mm
CR2430 is 3 mm thick; CR2450 is 5 mm. Holders are built for one stack height. The thinner cell loses spring pressure (“works only when I press the cover”). The thicker cell jams the door or bends the clip.
Not interchangeable
CR2430 vs CR2450
CR2430 vs CR2450: Can You Replace One with the Other?
Both are 3V lithium coin cells with a 24.5 mm diameter, but CR2450 is 5.0 mm thick while CR2430 is only 3.0 mm. Capacity roughly doubles with the thicker cell — and so does the chance of a jammed battery door.
Last verified Aug 25, 2026
Are CR2430 and CR2450 interchangeable?
Not interchangeable in most devices. Match the thickness printed on your device or old cell before ordering.
A CR2450 vs CR2430 swap fails on thickness, capacity. If the door only closes when you force it, or the device works only while you press the cover, you have the wrong cell — not a weak spring you should ignore.
CR2430 vs CR2450 specs: thickness, capacity
They share 3 V and LiMnO2 and 24.5 mm diameter, which is why CR2430 vs CR2450 looks interchangeable on a store shelf. Highlighted rows are the ones that change the purchase: thickness, 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.
Difference between CR2430 and CR2450 batteries
If you searched CR2450 vs CR2430, you are on the same comparison with the names reversed. The difference between CR2430 and CR2450 batteries is not the word “vs” — it is the specs that do not match after you ignore the similar photos.
Capacity — 280–320 mAh vs 550–620 mAh
Typical CR2430 capacity is 280–320 mAh. CR2450 is 550–620 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.
CR2450 typically offers ~550–620 mAh vs ~280–320 mAh for CR2430
CR2450 typically offers ~550–620 mAh vs ~280–320 mAh for CR2430
CR2450 may prevent CR2430 battery doors from closing or crush contacts
CR2450 may prevent CR2430 battery doors from closing or crush contacts
CR2430 in a CR2450 holder often loses spring contact and drops power
CR2430 in a CR2450 holder often loses spring contact and drops power
How the size code works (CR2430 vs CR2450)
Coin and button codes are rulers, not brand slogans. The letters mark chemistry class. The digits encode size. CR2430 measures 24.5 × 3 mm; CR2450 measures 24.5 × 5 mm. Once you read the code that way, CR2450 vs CR2430 stops looking like a preference and starts looking like a fit check.
Can I use a CR2430 instead of a CR2450?
Usually no. CR2430 is 24.5 × 3 mm at 3 V (LiMnO2). CR2450 is 24.5 × 5 mm at 3 V (LiMnO2). Those are not the same part.
If the spent cell or tray said CR2450, specify that code. Forcing CR2430 can crack a cover, lose contact, or apply the wrong voltage.
Can I use a CR2450 instead of a CR2430?
Usually no. Going the other way does not fix a diameter, thickness, or voltage miss. CR2450 in a CR2430 holder has the same problem with the names flipped.
If you arrived from a CR2450 vs CR2430 search, stay on this page. The answer does not change.
Brand labels and aliases
Retail packs hide the IEC size behind house codes. CR2430 also appears as DL2430, ECR2430. CR2450 also appears as DL2450, ECR2450, BR2450. Those prefixes do not change the outline unless the chemistry letters change (BR, LIR, ML, PR).
How to identify CR2430 versus CR2450
You do not need a full datasheet to settle CR2430 vs CR2450. 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.
- Read the code on the old cell: CR2430, CR2450, and the brand prefixes that map to each one.
- If the print is worn off, check the tray, battery door, or user manual before buying.
- Measure diameter if the codes are gone: CR2430 is 24.5 mm; CR2450 is 24.5 mm.
- Measure thickness: CR2430 is 3 mm; CR2450 is 5 mm.
- Buy the matching code. Extra capacity or a thicker can only helps when the holder is built for that cell.
Choose CR2430 when…
- Your old cell or device label says CR2430 / DL2430 / ECR2430
- The compartment is shallow (~3 mm) and the door sits flush with a thin cell
- You need a thinner profile for a slim remote or medical accessory
Choose CR2450 when…
- The device explicitly lists CR2450 / DL2450
- You need longer runtime and the holder has depth for a 5.0 mm cell
- The spring travel and door clearance were designed for the taller cell
Compatibility and substitution
Sharing a diameter does not make these drop-in replacements. If a thicker CR2450 almost fits, do not force it — warped doors and intermittent contact are common failure modes.
Do not stack cells, grind a can, or use foil as a permanent spacer to fake CR2450 with CR2430. Read the stamp, then the spec table. If the door will not close without force, you have the wrong height or diameter.
CR2430 vs CR2450 FAQ
Can I use CR2450 instead of CR2430?
Usually no. CR2450 is 5.0 mm thick versus 3.0 mm for CR2430 and may prevent battery doors from closing or damage the holder.
Will a CR2430 work in a CR2450 device?
Sometimes briefly, but contact is unreliable. The thinner cell often sits too low for the spring, causing random power loss.
I searched CR2450 vs CR2430 — is this the right page?
Yes. CR2430 vs CR2450 and CR2450 vs CR2430 are the same pair. Fit, voltage, and chemistry do not change when you flip the order.
Should I always trust a cross-reference chart?
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.
Review record and primary sources
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.
- Lithium Technical Handbook: CR Coin-Type Batteries — Panasonic Energy, 2020 handbook (2020). CR/BR dimensions, nominal voltage, capacity, discharge and temperature characteristics.
Revision record: source citations and field-level review scope added September 11, 2026. See our sources and methodology and corrections policy.