Button cell batteries, such as the CR2016 and CR2025, are widely used in small electronic devices like remote controls, watches, calculators, and more. While they share some similarities, their differences in size and capacity make them suited for distinct applications. Let’s explore their features, differences, and which one is best for your needs.
Table of Contents
Overview
Both the CR2016 and CR2025 are lithium coin-cell batteries:
- CR: Lithium manganese dioxide (chemical composition).
- 20: Diameter in millimeters (20 mm).
- 16/25: Thickness in tenths of millimeters (1.6 mm for CR2016 and 2.5 mm for CR2025).
Comparison Table
| Feature | CR2016 | CR2025 |
|---|---|---|
| Diameter | 20 mm | 20 mm |
| Thickness | 1.6 mm | 2.5 mm |
| Capacity | ~90 mAh | ~170-170 mAh |
| Voltage | 3 volts | 3 volts |
| Weight | ~1.8 g | ~2.5 g |
| Applications | Devices with low power needs | Devices requiring longer life or higher power |
| Battery Life | Shorter than CR2025 | Longer due to higher capacity |
| Price | Slightly cheaper | Slightly more expensive |
Key Differences
Thickness
- The most noticeable difference is the thickness: the CR2025 is 0.9 mm thicker than the CR2016. This means the CR2025 holds more active material, contributing to its higher capacity.
Capacity
- CR2016: ~90 mAh, suitable for low-power devices.
- CR2025: ~170 mAh, nearly double the capacity, making it ideal for devices requiring extended battery life.
Compatibility
- Both batteries share the same diameter and voltage, so they are often interchangeable in devices. However:
- If your device’s battery compartment is thin and cannot accommodate the thicker CR2025, the CR2016 is the better choice.
- Using a CR2016 in a compartment designed for a CR2025 may result in poor contact or a loose fit.
4. Applications
- CR2016: Best for devices with minimal power requirements, such as calculators or basic remote controls.
- CR2025: Ideal for devices with moderate power needs or longer usage, such as car key fobs and medical devices.
Pros and Cons of Each
CR2016
Pros:
- Slimmer, suitable for compact devices.
- Slightly cheaper.
- Lighter weight.
Cons:
- Lower capacity, resulting in shorter battery life.
- May not fit securely in devices designed for thicker batteries.
CR2025
Pros:
- Higher capacity, providing longer life.
- Suitable for a wider range of devices.
Cons:
- Slightly more expensive.
- Thicker, which may limit use in slim battery compartments.
Which One Should You Choose?
- Choose the CR2016 if:
- Your device requires a slimmer battery.
- The device has minimal power needs, such as a wristwatch or pocket calculator.
- Choose the CR2025 if:
- Your device can accommodate the thicker battery.
- You want longer-lasting power, especially in devices like remote controls, toys, or medical equipment.
Summary
Both the CR2016 and CR2025 are reliable and widely used batteries, but their differences in thickness and capacity determine their suitability for specific devices. Check your device’s battery compartment and requirements to ensure the best fit and performance.