CR2016 vs CR2032: Size, Power, and Use Cases Comparison

CR2016 and CR2032 are two of the most common coin cell batteries used in small electronic devices. You can find them in watches, key fobs, fitness trackers, calculators, toys, and even computer motherboards. At first, they look almost the same because both are round, flat, and marked with “3V.” Because they look so similar, many people ask: Can I use a CR2032 instead of a CR2016? 

Let’s find out.

What Are Coin Cell Batteries?

Coin cell batteries are small, flat batteries shaped like coins. People also call them button batteries. They are much thinner and wider than AA or AAA batteries. Coin cell batteries come in many types, sizes, and chemistries. Some are rechargeable, and some are single-use.

These batteries are made for low-power devices that need a steady voltage for a long time. Coin batteries are popular because they are:

• Small and lightweight

• Long-lasting

• Reliable

• Easy to replace

Types of Button Batteries

Button batteries fall into two main groups.

1. Non-Rechargeable Button Batteries

These are used once and then replaced.

• CR series: Lithium manganese dioxide, 3V. CR batteries are the most popular today because they last longer and provide stable voltage.

• LR series: Alkaline, 1.5V

• SR series: Silver oxide, 1.55V

2. Rechargeable Button Batteries

These can be charged again and again. Rechargeable coin cells are less common and should only be used in devices designed for them.

• LIR series: Lithium-ion, 3.6V to 3.7V

• ML or VL series: Rechargeable lithium, 3V

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Understanding CR Battery Names

The name of a CR battery tells you its size.

For example:

• CR2016

  • 20 = 20 mm diameter

  • 16 = 1.6 mm thickness

• CR2032

  • 20 = 20 mm diameter

  • 32 = 3.2 mm thickness

Both batteries have the same width but different thickness.

What Is a CR2016 Battery?

The CR2016 is a lithium coin cell battery with a diameter of 20 mm and a thickness of 1.6 mm. It provides a steady 3 volts of power. Because it is thin and lightweight, it is often used in very compact devices. CR2016 batteries are designed for devices that need small amounts of power over a long period.

Basic Features of CR2016

• Voltage: 3V

• Diameter: 20 mm

• Thickness: 1.6 mm

• Average capacity: 75 to 90 mAh

• Weight: About 1.6 grams

CR2016 Battery Specifications

Common Uses of CR2016 Batteries

CR2016 batteries are used in devices that do not need a lot of power. Their slim size makes them perfect for devices with very tight battery compartments.

Typical Devices

• Digital watches

• Car key fobs

• Fitness trackers

• Small toys

• Medical devices like glucose meters

• Calculators

• LED lights

• Remote controls

Advantages of CR2016

1. Very thin and lightweight: The CR2016 battery is slim and light, so it fits easily in small devices without adding extra weight.

2. Fits compact devices: Because of its thin size, it is perfect for devices with limited space, such as watches and small gadgets.

3. Stable voltage output: It provides a steady 3V power, which helps devices work smoothly without sudden drops in performance.

4. Low self-discharge: This battery loses its charge very slowly when not in use, so it can last for years in storage.

5. Easy to find: CR2016 batteries are widely available in stores and online, so they are easy to replace when needed.

Disadvantages of CR2016

1. Lower capacity: It stores less energy compared to larger batteries, so it cannot power devices for a long time.

2. Shorter battery life compared to CR2032: Because it has a lower capacity, it runs out faster than a CR2032 battery.

3. Not ideal for power-hungry devices: Devices that need more power or run continuously may not work well with a CR2016, as it may drain quickly.

What Is a CR2032 Battery?

The CR2032 is another lithium coin cell battery. It has the same diameter as CR2016 but is twice as thick. Because it is thicker, it can store much more energy.

Basic Features of CR2032

• Voltage: 3V

• Diameter: 20 mm

• Thickness: 3.2 mm

• Average capacity: 200 to 240 mAh

• Weight: About 3 grams

CR2032 Battery Specifications

Common Uses of CR2032 Batteries

CR2032 batteries are used in devices that need more power or longer battery life.

Typical Devices

• Computer motherboards (CMOS battery)

• Smartwatches

• Fitness trackers

• Car key fobs

• Medical devices

• Remote controls

• Toys

• Calculators

• LED flashlights

Advantages of CR2032

1. Higher capacity: The CR2032 battery can store more energy than smaller batteries like CR2016. This means it can power devices for a longer time.

2. Longer battery life: Because it has more capacity, it lasts much longer before you need to replace it. This is useful for devices you do not want to open often.

3. Same voltage as CR2016: It provides the same 3V output, so many devices can use it if the size fits. This makes it a good alternative in some cases.

4. Very common and easy to find: CR2032 batteries are widely available in shops and online. They are one of the most popular coin cell batteries, so replacements are easy to get.

Disadvantages of CR2032

1. Thicker and heavier

2. May not fit devices designed for CR2016

CR2016 vs CR2032

Storage and Shelf Life

• Store at room temperature

• Keep away from moisture

• Avoid short circuits

Safety Tips

• Keep away from children. Button batteries can be dangerous if swallowed.

• Do not swallow

• Do not recharge CR batteries

• Dispose properly

Where to Buy CR2016 and CR2032 Batteries

Online

1. Amazon

2. eBay

3. Electronics stores

Physical Stores

1. Supermarkets

2. Drug stores

3. Electronics shops

4. Wholesale clubs

Final Conclusion

CR2016 and CR2032 batteries may look the same, but they are not exactly the same. The main difference is their thickness and how much power they can store. The CR2032 is thicker and can last much longer, while the CR2016 is thinner and fits better in small devices.

It is always best to use the battery type recommended for your device. Using the right battery helps your device work properly, last longer, and stay safe. If you are not sure, check the device manual before changing the battery.

Remember, knowing the difference between these batteries helps you choose the right one and avoid damage to your device.

FAQs

Q1. Is stacking two CR2016 batteries safe for all devices?
A: No, it is not safe for all devices. Some devices are not designed for battery stacking. If the batteries do not fit properly, it can cause poor contact, overheating, or damage. Always check your device manual before trying this.

Q2. Why do CR2032 batteries last longer than CR2016?
A: CR2032 batteries are thicker and have more capacity, so they can store more energy. Because of this, they can power a device for a longer time compared to CR2016.

Q3. Do CR2016 and CR2032 batteries have the same power output?
A: Yes, both batteries provide the same voltage of 3V. However, they do not last the same amount of time because their capacity is different.

Q4. Can using the wrong battery damage my device?
A: Yes, using the wrong size battery can cause problems. A thicker battery may not fit properly, and a thinner battery may not make good contact. This can lead to poor performance or even damage the device.

Q5. Do these batteries lose power when not in use?
A: Yes, but very slowly. Both CR2016 and CR2032 have low self-discharge, which means they can last for years in storage without losing much power