What is the CR1220 Battery?

The CR1220 is a type of coin cell battery. These tiny batteries are commonly used in small devices like watches, calculators, key fobs, hearing aids, and medical equipment. The "CR" in CR1220 stands for lithium chemistry, which is used to power these batteries. The number "1220" refers to the size of the battery: it's 12mm in diameter and 2.0mm in height.

Why CR1220 Battery?

CR1220 batteries are a popular choice for several reasons:

• Compact Size: Their small, round shape makes them ideal for devices where space is limited.
• Long Shelf Life: These lithium batteries are known for their longevity. A CR1220 battery can last for years in storage due to its low self-discharge rate.
• Reliable Power: Despite their size, CR1220 batteries provide steady and consistent voltage, usually 3V, ensuring your devices function smoothly.

CR1220 Battery Equivalent

Sometimes, you might need to replace a CR1220 battery and find that it's hard to find an exact match. Fortunately, there are several equivalents you can choose from. These equivalents are designed to fit the same space and provide similar performance. Some of the most common CR1220 battery equivalents include:

• CR1225: Slightly thicker than the CR1220, but the same diameter. Works in most cases but may not fit in very tight spaces.
• DL1220: Manufactured by Duracell, this is essentially the same as the CR1220 but branded under Duracell's name.
• ECR1220: Another equivalent produced by Energizer. It performs in the same way as the CR1220.
• SB-T13: A common alternative from some battery manufacturers that can replace the CR1220 in various devices.

It's always a good idea to check the voltage and size before substituting an equivalent, but most of these will work seamlessly.

CR1220 Battery Chart: Sizes and Specifications

If you're unsure about the sizes or need to find more options, a CR1220 battery chart can be useful. Here's a quick guide to help you compare CR1220 with other common coin cell batteries:

As you can see, the CR1220 is part of a family of small lithium batteries, and while each has its unique specifications, they all provide 3V of power. The chart is a helpful reference when you need a replacement and aren't sure what to choose.

CR1220 vs 357 Battery: Key Differences

Now, let's dive into the comparison between the CR1220 and the 357 battery, two coin cell batteries that are often used interchangeably in many devices. Despite their similar appearance and use cases, they have some important differences.

Voltage

CR1220: The CR1220 provides a 3V output, which is typical for most lithium coin cells. This voltage is ideal for watches, key fobs, calculators, and other small devices that require consistent, long-lasting power.

357 Battery: The 357 battery, also known as SR44 or AG13, is a 1.55V alkaline battery. This lower voltage means that it's typically used in devices that don't require as much power as those needing a 3V lithium coin cell.

Chemistry

CR1220: This is a lithium battery, known for its long shelf life, consistent voltage, and higher energy density.

357 Battery: The 357 is an alkaline battery, which means it has a lower energy density and doesn't last as long as lithium cells, especially in high-drain devices.

Size and Fit

CR1220: The CR1220 is 12mm in diameter and 2.0mm in height, which makes it a perfect fit for small devices like watches, hearing aids, and key fobs that require a higher voltage.

357 Battery: The 357 battery has a similar diameter (11.6mm), but it is slightly thinner (5.4mm). This means that, while the 357 may fit in some of the same devices as the CR1220, it might not provide the same performance.

Application

CR1220: The CR1220 is commonly used in devices that require 3V, such as watches, key fobs, medical equipment, and calculators. It's ideal for devices that have higher energy demands.

357 Battery: The 357, on the other hand, is more commonly used in older watches and small gadgets that can run on 1.55V. It is also used in hearing aids, toys, and some small calculators.

Shelf Life

CR1220: Lithium batteries like the CR1220 have a much longer shelf life than their alkaline counterparts, often lasting up to 10 years when stored properly.

357 Battery: Alkaline batteries like the 357 typically have a shorter shelf life, often around 5 to 7 years.

Performance in Devices

CR1220: Due to its higher voltage, the CR1220 is more suitable for devices with higher power demands, and it provides more consistent performance over time.

357 Battery: The 357 battery is good for lower-drain devices but may start to lose power more quickly when used in devices that require a higher voltage or more energy.

Popular Brands of CR1220 Batteries

Several brands produce CR1220 batteries, and each has its own strengths. Here are some of the top brands and what you can expect from them:

• Duracell (DL1220): Duracell is a well-known brand that's synonymous with reliable batteries. Their DL1220 is one of the most popular replacements for the CR1220. Known for long-lasting power, Duracell batteries are ideal for watches and small devices.