Button Coin Cell Batteries: A Comprehensive Overview

Button Coin Cell Batteries: A Comprehensive Overview

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Button Coin Cell Batteries: A Comprehensive Overview

Button and Coin Cell Batteries Chiptech

Introduction

Button coin cell batteries, also known as button batteries or coin batteries, are small, flat, circular batteries that are commonly used in a wide range of electronic devices, including watches, calculators, hearing aids, key fobs, and medical devices. These batteries are characterized by their compact size, high energy density, and long shelf life, making them an ideal choice for applications where space is limited and reliable power is essential.

Types of Button Coin Cell Batteries

There are various types of button coin cell batteries available, each with its own unique characteristics and applications. The most common types include:

  • Alkaline: These batteries are relatively inexpensive and have a moderate energy density. They are commonly used in low-drain devices such as watches and calculators.
  • Silver-oxide: Silver-oxide batteries offer a higher energy density than alkaline batteries and are more stable over a wider temperature range. They are often used in devices that require a longer lifespan, such as hearing aids and medical implants.
  • Lithium: Lithium batteries are the most powerful type of button coin cell batteries, offering a high energy density and a long lifespan. They are commonly used in high-drain devices such as digital cameras and key fobs.

Sizes and Specifications

Button coin cell batteries come in a variety of sizes, which are designated by a standard numbering system. The most common sizes include:

  • CR2032: This is the most popular size, measuring 20mm in diameter and 3.2mm in thickness.
  • CR2025: Slightly smaller than the CR2032, it measures 20mm in diameter and 2.5mm in thickness.
  • CR2016: A compact size, measuring 20mm in diameter and 1.6mm in thickness.
  • CR1632: Smaller than the CR20 series, it measures 16mm in diameter and 3.2mm in thickness.
  • CR1220: The smallest common size, measuring 12mm in diameter and 2mm in thickness.

Voltage and Capacity

Button coin cell batteries typically have a voltage of 3 volts. However, some specialized batteries may have a voltage of 1.5 volts or 6 volts. The capacity of a button coin cell battery is measured in milliamp-hours (mAh) and indicates the amount of charge it can store. Higher capacity batteries will last longer in a given application.

Shelf Life and Storage

Button coin cell batteries have a long shelf life, typically ranging from 5 to 10 years. However, the shelf life can be affected by factors such as temperature and storage conditions. Batteries should be stored in a cool, dry place to maximize their lifespan.

Safety Precautions

Button coin cell batteries can be dangerous if swallowed or inserted into the body. They can cause severe burns and tissue damage. If a battery is swallowed, seek medical attention immediately. Keep batteries out of reach of children and dispose of them properly according to local regulations.

Applications

Button coin cell batteries are used in a wide range of electronic devices, including:

  • Watches
  • Calculators
  • Hearing aids
  • Key fobs
  • Medical devices
  • Digital cameras
  • Toys
  • Remote controls

Conclusion

Button coin cell batteries are versatile and reliable power sources for a wide range of electronic devices. They offer a compact size, high energy density, and long shelf life. By understanding the different types, sizes, and specifications of button coin cell batteries, users can select the appropriate battery for their specific application and ensure optimal performance and safety.

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