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Home  Product Technical Articles   CR2032 Lithium Cell: Equivalent, Uses, Dimensions [FAQ]

CR2032 Lithium Cell: Equivalent, Uses, Dimensions [FAQ]

Author: Mia
Date: 26 Jan 2022
 27751
cr2032 3v

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CR2032 is a coin cell battery, also known as a lithium energizer, which is mainly used in high-powered devices such as hearing aids, glucose monitors and car keyless entry transmitters.

It provides a long service life for the devices in which it is incorporated, allowing them to cover it by creating a solid cylindrical shape. It can withstand high temperatures ranging from-22 to 140 F and can hold a bundle of power, enough to hold the charge for almost 8 years.

How to Measure a CR2032 Coin cell battery


Catalog

CR2032 General Description

CR2032 Features

CR2032 Equivalents

How to calculate the running time of CR2032 battery

How to Use CR2032 Battery

CR2032 Applications

CR2032 Dimensions

Component Datasheet

FAQ


CR2032 General Description

Coin cell batteries such as CR2032 are generally used for small portable electronic devices such as wrist watches, pocket calculators, car keys with a lower input transmitter and hearing aids. They are usually of a compact size, 5-25mm in diameter and 1-6mm in height. The name defines the size of the battery as for CR2032, the first two digits are for the diameter and the second for the height or thickness of tenths of mm. So, according to this 20mm, the diameter is CR2032 and the thickness is 3.2mm.

Lithium button or coin cell batteries are a bit expensive than alkaline, but last longer, weigh less and have a wide operating temperature range.


CR2032 Features

  • Lithium Coin Cell

  • Nominal Voltage: 3.0 Volts

  • Maximum Current: 0.19A

  • Non - Rechargeable Disposal battery

  • Typical Capacity: 240 mAh @ 20°C 15kΩ Load

  • Service Life: ~720 Hrs @20°C 15kΩ Load

  • Typical Weight: 3.0 grams (0.10 oz.)

  • Operating Temp: -30C to 60C

  • Self-Discharge: ~1% / year


CR2032 Equivalents

DL2032, BR2032


How to calculate the running time of CR2032 battery

The CR2032 is a commonly used battery for portable electronic applications. The battery life depends on many parameters, such as operating temperature, discharge current, dynamic loads, etc. But let us assume, for the sake of simplicity, that we are powering a normal load that consumes a constant current of 20mA at 20°C. Then in that case the capacity of our battery is 240mAh. This means that if we draw 240mA, then our battery will last for 1 hour and, similarly, if we draw 120mA, the battery will last for 2 hours. So for our application that consumes only 20mA, the battery should last for (240/20) 12 hours. However, due to the varying current and operating temperature of the system, this figure will not be accurate. 

CR2032 Circuit1

 

Another important parameter to consider when deciding on your battery is the internal resistance of the battery. Unfortunately, every battery will have some internal resistance associated with it, which will prevent you from drawing the maximum current from the battery. The lower the IR (Internal Resistance) the more current you can draw from it and the higher the efficiency of the battery, the higher the IR of the battery as it ages or due to its operating environment.

 

When performing Pulse Test at 25°C, the continuous background drain at 15k ohms is 0.193mA @ 2.9V. And the pulse drain is 6.8mA @ 2.7V every 2 seconds *12 times/delay at 400 ohms.

CR2032 circuit2

Internal Resistance Characteristics


How to Use CR2032 Battery

There are many applications of coin cell batteries, the circuit below shows you how to connect the CR2032 coin cell battery to a simple LED circuit. CR2032 provides a nominal voltage of 3.0V, to power up a simple LED we need a minimum voltage of 2.2V so that we use the resistance to protect or limit the current.

Circuit using CR2032


CR2032 Applications

  • Key fob for cars.

  • Wireless doorbell for house.

  • CMOS battery in computers.

  • Glucometers

  • Digital thermometers

  • Digital altimeter

  • Cyclocomputers

  • Heart rate monitors


CR2032 Dimensions

CR2032 Dimensions


Component Datasheet

CR2032 Datasheet


FAQ

  • Are all 2032 batteries the same?

A 2032 battery is 20mm in diameter and 3.2mm thick. ... There are two types of 2032 batteries generally available, CR2032 and BR2032 (the capitalization, or lack thereof, for the letters is unimportant, a cr2032 is the same as a CR2032 and a br2032 is the same as a BR2032). Both are 3-volt designs.

  • How long will a cr2032 battery last?

10 years.  The simplest way to look at battery life is to look at the total charge in milliamp hours, and divide it by current consumption. In an application drawing a constant 1 microamp or less, this comes out to over 10 years.

  • What is cr2032 batteries used for?

Coin Lithium - CR2032. Panasonic Lithium coin CR2032 batteries is the most common battery coin providing long-lasting, reliable power for various devices. They are used to power small electronics devices such as calculators, wrist watches, various medical devices, fitness appliances, toys etc.

  • Can I use cr2032 instead of cr2016?

No, the CR2016 is thinner and a bit smaller than the CR2032.

  • Can you recharge cr2032 battery?

CR2032 battery is a lithium ion cell battery manufactured for internal use by electronic products. ... Charging a CR2032 cell battery can consist of plugging the electrical item into a power adapter or removing the battery from the device and placing it in a battery charger.

  • How do you know if a 2032 battery is good?

For the CR2032, that voltage would be anything less than 2.7 volts. The CR2032 is a 3-volt batteryIf the measured voltage reads less than 10 percent of the rated voltage, then the battery needs to be replaced. For the CR2032, that voltage would be anything less than 2.7 volts.

  • What is the difference between cr2016 and cr2032?

Same diameter size sure is good, but nominal capacity difference is not something to rely on. CR2016 has only 45-50% nominal capacity compared to CR2032 batteries. ... CR2032 vs CR2016: Both models have 20mm in diameter. CR2016 have less power (nominal capacity) and it is a bit thinner (1.6mm), CR2032 is 3.2mm thick.

  • Is cr2032 ion or metal?

CR2032 lithium button cell batteryLithium 9 volt, AA, and AAA sizes. The top object is a battery of three lithium-manganese dioxide cells, the bottom two are lithium-iron disulfide cells and are compatible with 1.5 volt alkaline cells.

  • Will cr2032 work in place of cr2450?

The CR2450 battery relies on the same storage technology as the CR2032 type. Therefore the energy density is the same, but the CR2450 cell provides more capacity due to its larger size. The capacity also varies depending on the manufacturer and lies around 620 mAh.

  • At what voltage is a cr2032 battery dead?

A brand new 3 volt battery (say CR2032 for instance) has about 3.3 volt. when the battery drops down to 2.8-2.7 volt it is considered dead.

 

 

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1 comment

    • Sue on 2022/10/23 8:43:58

    How much lithium is in this battery?

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