Button cell batteries like the CR2032 and CR2016 are essential for powering small electronic devices such as watches, calculators, remote controls, and key fobs. While they appear similar at first glance, these batteries have distinct differences that affect their performance and compatibility.
CR2032 Coin Cell Battery
This article provides a detailed comparison of the CR2032 and CR2016, helping you choose the right battery for your needs.
Quick Summary
The CR2032 is ideal for devices that require more power and have space for its thicker design, while the CR2016 is better suited for slim devices with minimal power needs.
What Are CR2032 and CR2016 Batteries?
Both CR2032 and CR2016 are lithium coin-cell batteries with a chemical composition of lithium manganese dioxide, denoted by the “CR” prefix. The numbers represent their dimensions in millimeters:
- CR2032: 20 mm diameter, 3.2 mm thickness.
- CR2016: 20 mm diameter, 1.6 mm thickness.
These dimensions directly influence their capacity and applications.
CR2032 vs. CR2016 Comparison Table
| Feature | CR2032 | CR2016 |
|---|---|---|
| Diameter | 20 mm | 20 mm |
| Thickness | 3.2 mm | 1.6 mm |
| Capacity | ~220 mAh | ~90 mAh |
| Voltage | 3V | 3V |
| Lifespan | Longer due to higher capacity | Shorter than CR2032 |
| Weight | Heavier | Lighter |
| Applications | Devices with higher power needs | Devices with low power needs |
| Compatibility | May not fit slim compartments | Fits slim compartments |
Key Differences Between The Two Batteries
Thickness
The CR2032 is 3.2 mm thick, while the CR2016 is thinner at 1.6 mm. This difference affects which battery compartments they can fit into and their energy capacity.
Capacity
The CR2032 has a higher capacity of approximately 220 mAh, allowing it to power devices for longer periods. The CR2016, with a capacity of around 90 mAh, is better suited for devices with lower power requirements.
Voltage
Both batteries provide a consistent voltage of 3V, ensuring they can power compatible devices equally well in terms of output.
Lifespan
Due to its higher capacity, the CR2032 lasts significantly longer under similar usage conditions than the CR2016.
Are CR2032 and CR2016 Interchangeable?
The two batteries can sometimes be interchangeable, but there are limitations based on the device’s requirements.
When They Are Interchangeable
- If the battery compartment has enough space, a CR2032 can replace a CR2016 for longer battery life.
- Two CR2016 batteries stacked together can sometimes replace a single CR2032 if the device supports it. However, this should only be done if explicitly recommended by the manufacturer.
When They Are Not Interchangeable
- If the device’s battery compartment is designed specifically for the thinner 1.6 mm profile of the CR2016, a CR2032 will not fit.
- Replacing a CR2032 with a CR2016 will result in a shorter lifespan, which may be unsuitable for devices with higher power needs.
When to Use CR2032 or CR2016
Use CR2032 If:
- Your device can accommodate the thicker 3.2 mm profile.
- You require a longer battery life for high-power devices like LED key fobs or medical devices.
- You want to minimize the frequency of battery replacements.
Use CR2016 If:
- Your device has a slim compartment that cannot fit a thicker battery.
- The device has low power requirements, such as basic calculators or small remote controls.
- Weight or size constraints are a concern.
Tips for Choosing the Right Battery
- Check the Device Manual: Always consult the user manual to determine the recommended battery type.
- Measure the Compartment: Ensure the battery’s thickness matches the available space in your device.
- Avoid Stacking Batteries Unless Advised: Using two CR2016 batteries to replace a CR2032 should only be done if explicitly supported by the device.
- Prioritize Compatibility: Always use the battery type specified for optimal performance and longevity.
Summary
The CR2032 and CR2016 batteries share the same diameter and voltage, but their differences in thickness, capacity, and lifespan make them suitable for different applications.
The CR2032 is best suited for devices that demand higher power and can accommodate its thicker size, whereas the CR2016 is more appropriate for compact devices with lower power requirements.