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source:Industry News release time:2025-01-07 Hits: Popular:AG11 battery
CR2032 is a very common button cell battery widely used in various small electronic devices. This battery is known for its compact size, stable performance and long service life, especially suitable for small devices that require long-term stable power supply.
Main Features
Dimensions and specifications:
Diameter: 20 mm
Thickness: 3.2 mm
Hence the name "2032", where "20" represents the diameter and "32" represents the thickness in millimeters.
Chemical composition:
CR2032 belongs to lithium manganese dioxide (Li-MnO₂) batteries, which means that it uses lithium as the negative electrode material and manganese dioxide as the positive electrode material. This combination provides high energy density, long shelf life, and stable discharge characteristics.
Nominal voltage:
The nominal voltage is 3 volts (V), which makes them ideal for small devices that require higher voltage.
Capacity:
The capacity is usually between 200mAh and 240mAh, depending on the manufacturer. This is sufficient for most low-power applications.
Self-discharge rate:
The low self-discharge rate allows the battery to retain most of its charge even when not in use for a long time. High-quality CR2032 batteries can retain most of their initial capacity after being stored for several years.
Operating temperature range:
The general operating temperature range is -20°C to 60°C, and some models may support a wider temperature range.
Safety:
Multiple built-in protection mechanisms, such as overcharge protection, over-discharge protection, short-circuit protection, etc., ensure safety in use. However, for children, these small and round batteries are easy to swallow and pose serious health risks, so they must be properly stored and kept away from children.
Environmental friendliness:
Modern CR2032 batteries do not contain mercury and other harmful substances, making them more environmentally friendly. Used batteries should be properly disposed of in accordance with local regulations to reduce environmental pollution.
Application areas
Watches: Due to their small size, light weight and stable power supply, CR2032 batteries are often used in timepieces such as quartz watches.
Medical equipment: portable medical instruments such as blood glucose meters and pulse oximeters, which require reliable power support.
Remote controls: remote control devices for TVs, sound systems, and other household appliances, especially in applications that do not require particularly high current.
Toys and game equipment: especially those that require lightweight and miniaturized design.
Calculators: small computing tools such as handheld calculators usually use CR2032 batteries as power sources.
Car keys: modern car keys usually have built-in CR2032 batteries for power supply.
Wireless headphones: some small wireless headphones may also use CR2032 batteries as power sources.
Smart tags and sensors: such as RFID tags, temperature sensors, etc., these devices usually require long-term stable power support.
Usage suggestions
Choose a reliable brand: try to choose batteries from well-known brands when purchasing to ensure performance and safety.
Follow the correct replacement method: replace the battery correctly according to the instructions in the device manual to avoid damaging the device or causing a short circuit.
Pay attention to the storage environment: it should be stored in a dry and cool place, avoiding high temperature and high humidity environments to avoid affecting battery performance.
Check the battery status regularly: Even if the device is not used frequently, the battery charge should be checked regularly and replaced as needed to prevent leakage from damaging the device.
Dispose of used batteries properly: Dispose of used batteries properly in accordance with local regulations to avoid environmental pollution.
Alternative options
If you need batteries with different specifications or characteristics, you can consider the following common alternatives:
Other types of button batteries: such as CR2016 (slightly thinner, smaller capacity), CR2025 (slightly thicker, larger capacity), etc., depending on your application needs.
Rechargeable button batteries: Although not as common as disposable lithium batteries, such products do exist on the market, such as ML series or LIR series, which provide the advantage of reusability, but may differ in capacity and discharge characteristics.
Precautions
Match device needs: Make sure the selected battery is fully compatible with the device, especially in terms of voltage and physical size.
Risk of mixing: Do not mix old and new batteries or batteries of different types (such as CR2032 and CR2025) to avoid device damage or safety hazards.
Protection measures: Many devices have built-in protection circuits to prevent overcharging, over-discharging, and short circuits. It is important to ensure that these protection mechanisms are working properly.
Summary
CR2032 button batteries are an ideal choice for many devices that require stable DC power because of the stable voltage they provide and their compact size. Understanding their characteristics and how to use and maintain them properly can help you better manage and extend the life of these devices. If you have questions or need further assistance, please consult a professional or refer to the user manual of the relevant product.
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