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CR1620 is a common button cell battery that is widely used in various small electronic devices. This type of battery is known for its compact size and stable performance, and is particularly suitable for small devices that require long-term stable power supply.
Main features of CR1620 button battery
Dimensions and Specifications:
Diameter: 16mm
Thickness: 2mm
Hence the name "1620", where "16" represents the diameter and "20" represents the thickness in millimeters.
Chemical composition:
The CR1620 is a lithium manganese dioxide (Li-MnO2) battery, which means 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 voltages.
capacity:
Capacity usually ranges from 50mAh to 85mAh, depending on the manufacturer. This is sufficient for most low-power applications.
Self-discharge rate:
The self-discharge rate is low and it can retain most of its power even if it is not used for a long time. High-quality CR1620 batteries can retain most of their initial capacity after several years of storage.
Operating temperature range:
Typical operating temperature range is -20°C to 60°C, some models may support wider temperature ranges.
Security:
Built-in multiple protection mechanisms, such as overcharge protection, over-discharge protection, short-circuit protection, etc., ensure the safety of use. However, these small, round batteries can be easily swallowed by children, posing a serious health risk, and must be properly stored and kept away from children.
Environmental friendliness:
Modern CR1620 batteries do not contain mercury and other harmful substances, making them more environmentally friendly. However, used batteries should be disposed of properly in accordance with local regulations to reduce environmental pollution.
Application areas
Watches: CR1620 batteries are often used in timepieces such as quartz watches because they are small, lightweight and provide stable power.
Medical equipment: Portable medical instruments such as blood glucose meters and pulse oximeters require reliable power supply support.
Remote controls: Includes remote control devices for televisions, sound systems, and other home appliances, especially in applications that do not require particularly high currents.
Toys and gaming equipment: especially those requiring lightweight and miniaturized design.
Calculators: Small calculation tools such as handheld calculators often use CR1620 batteries as their power source.
Car keys: Modern car keys usually have a built-in CR1620 battery to power them.
Wireless headphones: Some small wireless headphones may also use CR1620 batteries as a power source.
Usage suggestions
Choose a reliable brand: When purchasing, try to choose batteries from well-known brands 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 and avoid 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 power should be checked regularly and replaced as needed to prevent leakage and damage to the device.
Properly dispose of used batteries: Properly dispose of used batteries in accordance with local regulations to avoid environmental pollution.
Alternative options
If you need a battery with different specifications or features, here are a few common alternatives to consider:
Other types of coin cell batteries: such as CR2032 (slightly thicker, larger capacity), CR1220 (smaller, suitable for more compact designs), etc., depending on your application needs.
Rechargeable button batteries: Although not as common as single-use lithium batteries, such products do exist on the market, such as the ML series or LIR series, which offer the advantage of reusability but may have some differences in capacity and discharge characteristics. different.
Things to note
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 CR1620 and CR2032) to avoid equipment damage or safety hazards.
Protection measures: Many devices have built-in protection circuits to prevent overcharge, over-discharge, short circuit, etc. It is important to ensure that these protection mechanisms are working properly.
Summarize
The CR1620 coin cell battery is an ideal choice for many devices that require stable DC power supply due to the stable voltage it provides and its compact size. Understanding their characteristics and how to properly use and maintain them 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 consult the user manual of the relevant product.
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