When it comes to small electronic devices like watches, calculators, and car key remotes, coin cell batteries are often the go-to power source. Two popular models you might encounter are the CR1220 and CR1225. Although they may look similar at first glance, there are some key differences between these two batteries that you should CR1220 vs CR1225 be aware of. In this article, we'll compare CR1220 vs CR1225 to help you understand their specifications, applications, and which one is the best fit for your device.

Overview of CR1220 and CR1225 Batteries

Both the CR1220 and CR1225 are lithium coin cell batteries that deliver a 3-volt output. They are part of the same family, sharing a similar diameter but differing in thickness and capacity.

Battery Type Diameter Thickness Voltage Capacity (mAh) Common Uses
CR1220 12 mm 2.0 mm 3V 35-40 Watches, calculators, fitness trackers
CR1225 12 mm 2.5 mm 3V 45-50 Car key remotes, medical devices, electronic toys

Key Differences Between CR1220 and CR1225

1. Physical Dimensions

  • CR1220: Measures 12 mm in diameter and 2.0 mm in thickness.
  • CR1225: Also has a 12 mm diameter but is slightly thicker at 2.5 mm.

This difference in thickness can affect whether the battery fits properly in your device. Always check the battery compartment specifications before choosing between these two.

2. Battery Capacity

  • CR1220: Offers a capacity of around 35-40 mAh, making it suitable for devices with lower power requirements.
  • CR1225: Has a higher capacity of 45-50 mAh, providing longer battery life for more power-hungry devices.

If your device consumes more power, such as a car key fob or a small medical device, the CR1225 might be a better option due to its higher capacity.

3. Battery Life

The thicker CR1225 generally has a longer battery life than the CR1220 due to its increased capacity. This makes it ideal for devices that are used frequently or require a more sustained power output.

4. Price and Availability

Both batteries are widely available and come from reputable brands like Energizer, Duracell, Panasonic, and Sony. However, due to its higher capacity, the CR1225 may be slightly more expensive than the CR1220.

Are CR1220 and CR1225 Interchangeable?

While both batteries share the same diameter and voltage, they are not always interchangeable due to their difference in thickness:

  • Device Compatibility: Some devices may have a battery compartment designed specifically for the thickness of a CR1220 (2.0 mm). Inserting a thicker CR1225 (2.5 mm) might prevent the battery cover from closing properly or even damage the device.
  • Battery Life Consideration: If your device can accommodate both, choosing the CR1225 could offer longer battery life.

Applications of CR1220 and CR1225 Batteries

Common Uses for CR1220

  • Wristwatches: Ideal for compact watches due to its thinner profile.
  • Calculators: Provides reliable power for low-drain devices like basic calculators.
  • Fitness Trackers: Used in devices that require minimal power but long-lasting performance.

Common Uses for CR1225

  • Car Key Remotes: Preferred for key fobs due to its higher capacity and longer life.
  • Medical Devices: Suitable for devices like digital thermometers and glucose monitors.
  • Electronic Toys: Provides extended playtime for small electronic toys.

How to Choose Between CR1220 and CR1225

When deciding between these two batteries, consider the following factors:

  1. Device Specifications: Check your device's manual or the existing battery to see the recommended size.
  2. Battery Life: If battery longevity is a priority, opt for the CR1225 due to its higher capacity.
  3. Fit: Ensure that the thicker CR1225 will fit into your device's battery compartment without causing issues.

Popular Brands and Where to Buy

Both CR1220 and CR1225 batteries are available from several well-known brands, including:

  • Energizer: Known for long-lasting and reliable performance.
  • Duracell: Offers batteries with a strong shelf life, perfect for backup storage.
  • Panasonic and Sony: Popular choices for consumer electronics.

You can find these batteries at electronics stores, supermarkets, and online retailers like Amazon, Walmart, and Best Buy.

Conclusion

While the CR1220 and CR1225 are similar in many ways, the differences in thickness and battery capacity can significantly impact their performance in various devices. Choosing the right one depends on your device's specifications and how often you'll need to replace the battery.

For compact devices with minimal power needs, go with the CR1220