By Lithium Cell 720
Technical Details and Performance
Size Compatibility and Battery Life
Equivalent Products and Alternatives
In the world of small electronic devices, CR2430 and CR2450 button batteries are popular choices because of their stable performance. However, their differences in thickness, capacity, and usage can confuse users. This article explains their key differences to help you choose the right battery for your device.
The names of button batteries show their size. The "24" in CR2430 means the diameter is 24mm. The "30" means the thickness is 3.0mm. CR2450 has the same diameter, but its thickness is 5.0mm. This thickness change increases its size by 66% compared to CR2430. At the same time, the battery capacity also becomes much larger.
You can see the main differences in the table below:
| Parameter | CR2430 | CR2450 |
| Weight | ~4.3g | ~6.8g |
| Typical Capacity | 280–340mAh | 550–620mAh |
| Chemistry Type | Lithium Manganese Dioxide (Li-MnO₂) | Same as left |
Product Advantage 1:
With the same chemistry, CR2450 increases its capacity by making the battery thicker. Its maximum capacity of 620mAh is 82% higher than CR2430. It is better for devices that need longer battery life.
Its slim design makes it good for small devices where space is limited:
CR2430 is used in 68% of small devices. Its 3mm thickness fits over 90% of thin battery slots.
Its larger capacity is good for high-power devices:
Product Advantage 2:
In medical monitoring devices, CR2450 can work for up to 12 months. That is twice as long as CR2430 (6 months), so users change batteries less often.
CR2450 has a capacity (620mAh) that is 1.82 times that of CR2430 (340mAh). Its energy density stays at 285mWh per cubic centimeter, which is very high. The higher thickness gives more space for the positive material (cathode), so the battery can store more energy.
Both batteries work from -30°C to +70°C. But in low temperature tests:
Product Advantage 3:
CR2450 uses an improved electrolyte formula. In extreme temperatures, its voltage changes less than ±5%. This is more stable than CR2430 (±8%), so it is better for outdoor equipment.
CR2450 is 2mm thicker. It does not fit into a standard CR2430 battery slot. If your device has a battery compartment that is 6mm or deeper, you can add a conductive spacer (pad) to make CR2450 fit. But a professional should check if the contact pressure is safe.
Here is a table that shows how long each battery can last in different devices:
| Device Type | CR2430 Battery Life | CR2450 Battery Life |
| Car Key | 1–2 years | Not applicable |
| Glucose Meter | 200 measurements | 450 measurements |
Data shows that CR2450 reduces the cost per use in medical devices by 37%. In the long run, it is more cost-effective.
Popular brand alternatives:
CR2430 Series
CR2450 Series
Important things to note:
Although the CR2430 and CR2450 batteries share the same nominal voltage of 3 volts, the CR2430 features significantly lower capacity and current output. As a result of their differing physical dimensions and energy storage capacities, these two battery types cannot be directly substituted for one another in most applications.
While both the CR2430 and CR2450 share the same 24.5 mm diameter, the CR2450 has a slightly greater thickness and height. Capacity-wise, the CR2430 delivers approximately 300 mAh, whereas the CR2450 offers a significantly higher output of around 620 mAh. These differences in both physical dimensions and energy storage mean the two battery types are not interchangeable for most device applications.
When seeking a replacement for your CR2430 battery, prioritize options matching its dimensions* and electrical specifications. Be aware that identical substitutes might not be universally accessible, as ideal selection depends on both your particular device's specifications and its energy consumption demands.
When unused and stored correctly, a CR2450 battery can retain its charge for up to a decade. Its actual lifespan, however, depends on multiple variables such as frequency of use, environmental storage conditions, and the particular device in which it's employed.
CR2430 batteries are small-sized, dependable power sources known for their extended service life. These coin cells find widespread application in compact electronics such as calculator units, infrared remotes, handheld medical instruments, data retention systems, portable gaming devices, and various other miniature gadgets requiring long-lasting energy solutions.
The CR2430 battery delivers an enhanced energy density, offering up to 30% increased power output for compact professional-grade devices. This versatile power source effectively supports various miniature electronics including smart home systems, wearable technology like smartwatches, keyless entry systems, and remote control units.