Cr2 Vs Cr123 Battery: A Comprehensive Guide to Choosing the Right One

Choosing the right battery can be overwhelming, especially with so many options available. The CR2 and CR123 batteries are two popular choices that often get confused with each other.

The CR2 battery is a 3-volt lithium battery that's commonly used in small devices like watches, remote controls, and hearing aids. It's a great option for devices that require a low voltage.

One key difference between the two batteries is their size. The CR2 battery is slightly larger than the CR123 battery. This means that devices designed for CR2 batteries may not fit CR123 batteries, and vice versa.

In terms of capacity, the CR2 battery typically has a lower milliampere-hour (mAh) rating than the CR123 battery. This means that CR123 batteries can power devices for longer periods of time.

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The CR2 battery measures 15.6 millimeters in diameter and 27 millimeters in height.

CR2 batteries are significantly smaller than their CR123 counterparts. They have a diameter of 15.6mm and a height of 27mm, making them a compact power solution for devices with space constraints.

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The smaller size of CR2 batteries makes them suitable for applications such as photo cameras, LED flashlights, and toys. These devices often have limited space and benefit from the compact form factor of the CR2 battery.

CR123 batteries, on the other hand, have a slightly larger diameter of 17 millimeters and a height of 34.5 millimeters. The increased size of CR123 batteries provides room for additional active material, resulting in higher capacity and power output.

The dimensional differences between these battery types make them generally non-interchangeable in most applications. Devices designed for CR2 batteries typically cannot accommodate the larger CR123 batteries.

CR2 batteries weigh approximately 11 grams per battery, making them a great option for handheld devices and portable equipment. Their weight is minimal and won't add bulk to devices while providing reliable power.

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CR2 and CR123 batteries have distinct performance and capacity characteristics.

CR123 batteries have a higher capacity, ranging from 700 to 1700mAH, compared to CR2 batteries, which have a capacity of 600 to 900mAH.

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This capacity difference translates to extended runtime in high-drain devices, making CR123 batteries ideal for applications like professional photography, tactical equipment, and high-performance flashlights.

Here's a comparison of the two battery types:

CR2 batteries, on the other hand, are suitable for moderate-drain applications, such as compact cameras and small LED flashlights, where size and weight constraints are primary considerations.

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CR2 batteries typically have a capacity of 600-900mAh, while CR123 batteries have a capacity of 700-1700mAh. This means CR123 batteries have a greater energy storage capacity.

The capacity difference between CR2 and CR123 batteries significantly impacts their suitability for various applications. CR2 batteries are suitable for devices like compact cameras, small LED flashlights, and basic security sensors that don't require extended continuous operation.

In contrast, CR123 batteries deliver substantially higher capacities, ranging from 1,300 to 1,700 milliampere-hours, enabling extended runtime in demanding applications and high-drain devices.

CR123 batteries are ideal for devices that require sustained power delivery over longer periods, such as high-performance flashlights, digital cameras with flash units, and tactical equipment.

Here's a comparison of the capacities:

CR123 batteries provide a significant advantage in terms of capacity and runtime, making them a better choice for applications where longer-lasting power is crucial.

CR2 and CR123 batteries are known for their long lifespan. They can store energy for up to 10 years when kept at temperatures below 60°C.

The specific lifespan of these batteries in devices can vary. For example, they can power an alarm system for up to five years.

It's clear that these batteries are built to last. Whether in storage or in use, they can provide reliable energy for a long time.

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CR2 and CR123 batteries are not interchangeable due to their size differences. CR2 batteries are smaller, measuring approximately 15.6 mm in diameter and 27 mm in height, while CR123A batteries are slightly larger, with dimensions of around 17 mm in diameter and 34.5 mm in height.

Using the wrong size battery can lead to poor electrical connections, risking device failure, overheating, or even chemical leaks. This can compromise both the device's functionality and user safety.

The physical dimensions of CR2 vs CR123 batteries prevent direct substitution in most devices. CR2 batteries are too small to make proper contact in CR123 battery compartments, while CR123 batteries are too large to fit in devices designed for CR2 batteries.

Mixing old and new batteries together is not recommended, and using CR2 batteries in devices designed for CR123 batteries can result in a poor fit or potential damage to the device. Always refer to the device’s manual or consult the manufacturer for the recommended battery type.

Some devices may accommodate both battery types through the use of adapters or adjustable battery compartments, but these situations are relatively rare.

CR2 batteries are smaller in size, with a diameter of approximately 15.6mm and a height of 27mm, making them significantly smaller than CR123 batteries.

CR2 batteries typically offer capacities between 600 and 900 milliampere-hours, providing adequate power for moderate-drain devices and applications with intermittent use patterns.

The weight of CR2 batteries is approximately 11 grams, making them lighter than CR123 batteries.

CR123 batteries, on the other hand, are larger and provide more power, with capacities ranging from 1,300 to 1,700 milliampere-hours.

Here's a comparison of the two battery types:

The mAh rating of CR2 and CR123 batteries is one of the most significant differences between the two, with CR2 batteries rated between 400 and 800 mAh and CR123s rated between 1500 and 2500 mAh.

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CR2 batteries offer capacities between 600 and 900 milliampere-hours, making them suitable for moderate-drain devices and applications with intermittent use patterns.

CR123 batteries deliver substantially higher capacities, ranging from 1,300 to 1,700 milliampere-hours, enabling extended runtime in demanding applications.

The capacity advantage of CR123 batteries becomes apparent in high-drain applications, where devices will exhaust CR2 batteries much more quickly.

CR123 batteries are ideal for devices that require a longer service life, such as high-output flashlights and advanced security systems.

CR2 batteries are typically used as direct replacements for smaller batteries in compact devices, while CR123 batteries cater to devices requiring more robust energy.

CR123 batteries have a lifespan of between 6 and 50 hours due to their high mAh rating, whereas CR2 batteries run for a shorter period of time, between 5.5 to 8 hours.

Both CR2 and CR123 batteries can maintain their charge for up to ten years when stored properly, making them ideal for emergency equipment and infrequently used devices.

CR123 batteries offer a longer runtime due to their higher capacity, which is particularly valuable for devices that require consistent performance.

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CR2 batteries are commonly used in compact digital cameras, small LED flashlights, and portable medical devices due to their compact form factor and adequate power delivery. They're also used in security applications like wireless sensors, door and window alarms, and compact security cameras.

CR123 batteries, on the other hand, power more demanding applications like professional digital cameras with built-in flash units and high-output tactical flashlights. They're also used in military and law enforcement equipment due to their reliability and performance characteristics.

In terms of cost, CR2 batteries are often less expensive than CR123 batteries, making them a more affordable option for everyday devices.

CR2 batteries are generally less expensive than CR123 batteries, making them a more affordable option for budget-conscious applications.

This cost difference is significant, with CR2 batteries often priced lower per unit than their CR123 counterparts.

However, the lower capacity of CR2 batteries can result in more frequent replacements, potentially offsetting the initial cost savings.

In high-drain applications, the superior capacity of CR123 batteries often makes them the more cost-effective choice, despite their higher upfront price.

Their increased capacity can lead to fewer replacements over time, reducing overall costs and making them a more economical option in the long run.

CR2 batteries are widely used in compact digital cameras, particularly point-and-shoot models, where size and weight are crucial factors.

CR2 batteries are also commonly used in small LED flashlights, fitness devices, laser pointers, and portable medical devices due to their compact form factor and adequate power delivery.

Security applications represent a significant market for CR2 batteries, including wireless sensors, door and window alarms, and compact security cameras.

CR123 batteries power more demanding applications, such as professional digital cameras, especially those with built-in flash units, which benefit from the enhanced performance of CR123 batteries.

High-output tactical flashlights and emergency lighting systems also commonly use CR123 batteries.

Military and law enforcement equipment frequently specifies CR123 batteries due to their reliability and performance characteristics.

In conclusion, the CR2 battery and CR123 battery have their own unique characteristics and uses.

The CR2 battery is a more compact and lightweight option, making it ideal for small devices and applications where space is limited.

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It has a slightly lower energy density compared to the CR123 battery, but still provides reliable performance in a variety of devices.

The CR123 battery, on the other hand, offers higher energy density and longer battery life, making it suitable for high-drain applications and devices that require more power.

Ultimately, the choice between a CR2 battery and a CR123 battery depends on the specific needs and requirements of the device or application.

If you're looking for a more compact option with reliable performance, the CR2 battery might be the better choice.

But if you need a battery with higher energy density and longer battery life, the CR123 battery is likely the way to go.

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