Lithium Coin Cells (3V) reference
CR2450
3V lithium coin — 24.5 × 5.0 mm. Higher capacity than CR2032; too wide for a 20 mm tray.
CR2450 aliases and equivalent names
Common search labels and closely related markings include DL2450, ECR2450, BR2450, 2450. Packaging conventions vary, so confirm the compatibility grade, voltage, chemistry, and dimensions shown below before replacing the battery.
Voltage
3 V
Chemistry
LiMnO2
Capacity
550–620 mAh
Size
24.5×5 mm
CR245024.5 × 5 mm
Exact equivalents
Exact- DL2450 — Duracell
- ECR2450 — Energizer
Compatible alternatives
Compatible- CR2450N — Narrow-tab variant for specific holders
- KECR2450 — Panasonic — Retail packaging variant
Conditional alternatives
Conditional- BR2450 — Panasonic — Li-CFx; lower capacity but superior high-temperature performance
Do not use
Not CompatibleTechnical data
Specifications
| Specification | Value |
|---|---|
| IEC / Common Code | CR2450 |
| Chemistry | LiMnO2 |
| Nominal Voltage | 3 V |
| Capacity | 550–620 mAh |
| Cutoff Voltage | ~2 V |
| Dimensions (D × H) | 24.5 × 5 mm |
| Shelf Life | ~10 years (unused, room temp) |
Typical applications
- Medical monitors
- Smart home sensors
- High-end key fobs
- IoT gateways
- PLC backup memory
- Tire-pressure sensors (some designs)
Applications
Replacement Compatibility
CR2430 is 2mm thinner — may not make reliable contact in CR2450 slots
Smaller diameter and much thinner — physically incompatible
Same size; BR2450 preferred for high-temperature or long outdoor life
CR2477 is thicker (~7.7 mm) — usually will not fit a CR2450 door
Side-by-side comparisons
- CR2430 vs CR2450: Can You Replace One with the Other?Not interchangeable
- CR2450 vs BR2450: Same Size, Different ChemistrySometimes
- CR2354 vs CR2450: Diameter MattersNot interchangeable
- CR2450 vs CR2477: Capacity vs HeightNot interchangeable
- CR2032 vs CR2450: Diameter, Capacity, and Which to BuyNot interchangeable
Guides
Frequently Asked Questions
Can I replace CR2450 with CR2430?
Generally no. CR2430 shares the 24.5 mm diameter but is only 3.0 mm thick versus 5.0 mm for CR2450, so most holders will not maintain proper contact.
What is the difference between CR2450 and BR2450?
Both fit the same holder. CR2450 uses lithium manganese dioxide and offers higher capacity. BR2450 uses lithium carbon monofluoride and performs better at extreme temperatures with slightly lower capacity.
Is CR2450 the same as CR2032?
No. CR2450 is 24.5 × 5.0 mm; CR2032 is 20 × 3.2 mm. Diameter and thickness both differ — they are not interchangeable.
How long does a CR2450 battery last?
Shelf life is often up to ~10 years unused. In-device life depends on load — low-power IoT nodes can run many months; high-drain pulses shorten that window.
Can I use CR2450 in a key fob that says CR2032?
No. The CR2450 will not fit a 20 mm CR2032 tray. Always match the code printed on the old cell.
Should I always trust cross-reference charts?
Use this guide as a starting point, then confirm with your device manual or manufacturer. Voltage, chemistry, and physical fit must all match for safe operation.
Related Batteries
Review record and primary sources
Reviewed by PlainBattery Technical Review Desk on 2026-08-25. Checked: model and alias mapping, nominal voltage and chemistry, physical dimensions, capacity range and replacement 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.
Selection notes
Match chemistry (CR vs BR) to your temperature environment. For room-temperature consumer devices, standard CR2450 (Li-MnO2) is the default choice. Confirm tabbed (N) variants only when the PCB requires them.
Last verified Aug 25, 2026. Always confirm voltage, chemistry, and dimensions with the device manufacturer before replacing any battery.