Types of batteries and their designations

Among the most popular battery sizes for sale and everyday use, there are several basic types. Below, we will discuss their specifications, applications and the most common myths related to markings.

AA ( R6) batteries – "fingers"

Dimensions:

• 14.5mm × 50.5mm

Use:
AA batteries, also known as R6, are some of the most commonly used batteries in everyday devices. We can find them, among others, in:

• Remote controls for TVs and other audio-video equipment
• Wireless mice
• Electronic toys
• Flashlights

Their versatility makes them irreplaceable in many home and office devices. Thanks to their popularity, their availability is huge, which affects competitive prices and a wide range of manufacturers.

R6 batteries – is it the same as AA?

Explanation:
The designation R6 is often used interchangeably with the term AA. Despite the different terminology, it is the same size of the battery, the difference is only in the marking method used by the manufacturers. That is why we often find products on the market described as AA or R6 – both names refer to batteries with the same dimensions and properties.

AAA batteries (R03) – "thin fingers"

Dimensions:

• 10.5mm × 44.5mm

Use:
Smaller than standard AA batteries, AAA batteries are used where space for a power supply is limited. They are popular in:

• Remote controls for audio and video devices
• Wall and desk watches
• Small electronics such as keyboards or other small gadgets

Their compact size makes them ideal for mobile devices where every millimeter counts.

R14 batteries – (C)

Dimensions:

• Diameter: 26.2mm
• Length: 50.0mm

Use:
R14 batteries (also known as "C" batteries). With a higher capacity than AA but a more compact size than R20, they are suitable for devices with moderate to variable power consumption, such as:

• Electronic toys (especially larger ones)
• Camping and camping flashlights
• Portable Speakers
• Portable radios

Their additional capacity compared to AA allows the devices to work longer without taking up as much space as the R20.

R20 Batteries - (D)

Dimensions:

• 34.2 mm × 61.5 mm

Use:
R20 batteries are much larger and have a higher energy potential. They are used in devices that require higher power consumption, for example:

• Industrial flashlights and emergency equipment
• Radios and communication devices
• Toys and electronic equipment with high energy requirements

Their larger size translates into longer operating time of the device, which is important in professional applications.

CR2032 battery – small but versatile

Dimensions:

• Diameter: 20mm
• Thickness: 3.2mm

Use:
Despite its small size, the 2032 battery is extremely popular and versatile. It finds its place in:

• Watches
• Car remote controls
• Calculators
• Other small electronic devices

Due to its compact dimensions and voltage stability, CR2032 is trusted in applications that require

Summary of battery types in the table

Below is a table summarizing the most important features of the discussed types of batteries:

Technological differences

In the world of batteries, technology is crucial for performance, durability and safety of use. The most common technological types are:

Alkaline batteries
Advantages:

• Higher energy density
• Longer runtime with moderate power consumption
• Improved leak resistance when used correctly

Zinc-carbon batteries
Disadvantages:

• Typically lower performance and shorter lifespan
• Weaker resistance to high power consumption
• Less stable voltage during discharge

Lithium Batteries
Why do they last longer?

• Higher efficiency: They have a significantly higher energy density, which allows devices to last longer, even with heavy use.
• Stable Voltage: Lithium provides a more stable voltage throughout its lifetime, making the devices work more efficiently.
• Resistance to extreme conditions: Lithium batteries are less likely to suffer from problems with low or very high temperatures, making them ideal for industrial and outdoor applications.

When choosing batteries for a specific application, it is worth paying attention to the manufacturing technology, because not every battery will be suitable for high power consumption or operation in difficult conditions.

Rechargeable or disposable batteries ?

The decision to use rechargeable and disposable batteries is a topic that arouses a lot of emotions. In recent years , NiMH (nickel-metal hydride) rechargeable batteries have been growing in popularity, as they are an eco-friendly alternative to traditional disposable batteries.

Advantages of NiMH rechargeable batteries:

• Financial savings: Although the investment in rechargeable batteries is higher at the beginning, multiple charges allow for long-term savings.
• Environmentally friendly: Less consumption of disposable batteries means less electronic waste and benefits for nature.
• Stable performance: Rechargeable batteries often have an even discharge, which ensures a constant voltage for a longer period of time.

Disadvantages of NiMH rechargeable batteries:

• Lower capacity: Compared to alkaline batteries, some rechargeable batteries may have a slightly lower capacity with lower power consumption.
• Memory effect: Although modern models are more resistant to the memory effect, improper charging can affect their performance.
• Charging time: Unlike non-rechargeable batteries, which are ready to use, rechargeable batteries take time to recharge.

For many users , the benefits of using rechargeable batteries outweigh some drawbacks, especially in devices with a high number of duty cycles, such as computer mice.

How to choose the right battery for the device?

Choosing the right battery is not random – there are several key factors to consider that affect the proper operation of the device. Below are the most important criteria:

• Tension:
  Each device is designed to operate at a specific voltage. Make sure that the battery meets the technical requirements of the equipment, as too high or low voltage can damage the device.
• Capacity:
  Expressed in milliampere-hours (mAh), the capacity of the battery or rechargeable battery determines the length of time the device will work. For devices with high power consumption, choose batteries or rechargeable batteries with a higher capacity.
• Technology:
  The choice between alkaline, lithium or zinc-carbon batteries depends on the specifics of use. Lithium batteries are great for applications that require stable voltage, while alkaline batteries are often sufficient for the average user.
• Device Type:
  It's a good idea to check to see if your device manufacturer recommends specific types of batteries. Some gadgets, especially those with high power requirements, may not work properly when using low-performance batteries.

The most common mistakes when choosing a faucet

When buying batteries and accessories, it is worth remembering about a few common mistakes that can affect the longevity of devices and the safety of their use:

• Using the wrong batteries in high-drain devices:
  Choosing low-performance batteries to power an industrial flashlight or radio can result in rapid discharge.
• Mixing different types of batteries in one device:
  Combining batteries with different technology or charge levels can lead to uneven discharge, which shortens the life of the battery and the device.
• Improper battery storage:
  Storage in humid or excessively hot locations may degrade battery performance, leading to leakage or loss of capacity. It is always a good idea to follow the manufacturer's recommendations for storage conditions.