When selecting a coin cell battery for your electronic devices, understanding the differences between battery models is essential. Two commonly used lithium coin cell batteries are the CR2450 and CR2032. While they may seem similar at first glance, their specifications and applications differ significantly.
This article will compare the CR2450 and CR2032 in terms of size, capacity, voltage, lifespan, and usage to help you determine which one best suits your needs.
Quick Summary of Differences
The CR2450 and CR2032 are both 3V coin cell batteries. The CR2450 is larger and offers more capacity, making it ideal for power-hungry applications, while the CR2032 is smaller and fits compact electronics.
Comparison Table
| Feature | CR2450 | CR2032 |
|---|---|---|
| Diameter | 24mm | 20mm |
| Thickness | 5.0mm | 3.2mm |
| Voltage | 3V | 3V |
| Capacity | 500-620mAh | 200-240mAh |
| Lifespan | Longer due to higher mAh | Shorter due to lower mAh |
| Common Uses | LED candles, medical equipment, sensors, GPS devices | Watches, key fobs, calculators, small electronics |
| Shelf Life | 5-10 years | 5-10 years |
Key Differences Between CR2450 and CR2032
Size & Dimensions
- The CR2450 is thicker and wider than the CR2032.
- The “24” in CR2450 indicates a 24mm diameter, while the “2032” in CR2032 means it has a 20mm diameter.
- The last two digits indicate thickness: CR2450 is 5.0mm thick, and CR2032 is 3.2mm thick.
Battery Capacity
- CR2450 has a significantly higher capacity (mAh rating) than CR2032.
- The CR2450 typically has a capacity between 500-620mAh, while the CR2032 ranges from 200-240mAh.
- This means the CR2450 lasts more than twice as long as the CR2032 under similar load conditions.
Voltage & Power Output
- Both batteries provide 3V output, meaning they can power similar types of devices.
- However, the CR2450, with its higher capacity, can sustain power-hungry applications for a longer duration.
Lifespan & Durability
- Due to its larger capacity, the CR2450 generally has a longer lifespan.
- Both batteries have a shelf life of 5-10 years, depending on storage conditions.
- The CR2450 is more suitable for devices requiring a steady power supply over extended periods.
Applications
- CR2032: Commonly found in wristwatches, calculators, key fobs, small medical devices, and some electronic toys.
- CR2450: Used in LED candles, medical equipment, digital thermometers, GPS devices, and smart home sensors where a higher capacity is required.
Can You Use CR2450 Instead of CR2032?
In most cases, CR2450 cannot directly replace CR2032 because of size differences. The larger CR2450 may not fit into a battery compartment designed for CR2032.
However, if the battery compartment allows for larger cells and you need a longer battery life, a CR2450 might be an upgrade—provided that the voltage and power requirements match.
Summary
The CR2450 and CR2032 are both 3V coin cell batteries, but they cater to different power needs. The CR2450 is larger and offers more capacity, making it ideal for power-hungry applications, while the CR2032 is smaller and fits compact electronics.
If you need a longer-lasting battery, go for the CR2450. If you require a compact option, the CR2032 is the better fit.
