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AA (R6), AAA (R03), R14, R20 batteries – differences and what is the best way to use them?
Batteries are part of everyday life – they power remote controls, toys, watches and even industrial equipment. Choosing the right type of battery can affect the comfort of using the device, its performance and operating costs. Knowing the differences between the different types of batteries allows you to make informed purchasing decisions and tailor batteries to your individual needs. In this article, we will discuss the designations and dimensions of AA (R6), AAA (R03), R14, R20 and CR2032 batteries, look at the technological differences between alkaline, zinc-carbon and lithium batteries, compare disposable batteries with rechargeable batteries, and provide practical tips on choosing the right batteries for specific devices.
Want to buy AA or AAA batteries? See the items in hurt.com.pl:
Types of batteries and their designations
Among the most popular battery sizes for sale and everyday use, there are several basic types. Below, we'll discuss their specifications, uses, and the most common myths associated with the markings.
AA batteries (R6) – "fingers"
Dimensions:
- 14.5 mm × 50.5 mm
Application:
AA batteries, also known as R6, are one of the most commonly used batteries in everyday devices. They can be found, 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.
Are you looking for good AA batteries, check out these items in our store:
4 x AA / LR6 everActive Pro Alkaline batteries (tray)
Reliable alkaline batteries from everActive.
PRO ALKALINE is the highest line of alkaline batteries for professional applications.
Capacity approx. 2900 mAh.
4 x everActive Pro Alkaline LR6/AA (blister)
Reliable alkaline batteries from everActive.
PRO ALKALINE is the highest line of alkaline batteries for professional applications.
Capacity approx. 2900 mAh Battery.
10 x AA / LR6 Duracell Duralock C&B batteries (blister)
Duracell AA batteries packed in 10 pieces
See more in hurt.com.pl: AA alkaline batteries
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 battery size, the only difference is in the method of marking used by 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
Application:
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.
Are you looking for good AAA batteries, see these items in our store:
4 x AAA / LR03 everActive Pro Alkaline batteries (tray)
Reliable alkaline batteries from everActive.
PRO ALKALINE is the highest line of alkaline batteries for professional applications.
Capacity approx. 1250 mAh.
4 x everActive Pro Alkaline LR03/AAA (blister)
Reliable alkaline batteries from everActive.
PRO ALKALINE is the highest line of alkaline batteries for professional applications.
Capacity approx. 1250 mAh Battery.
See more in hurt.com.pl: AAA alkaline batteries
R14 Battery – (C)
Dimensions:
- Diameter: 26.2mm
- Length: 50.0mm
Application:
R14 batteries (also known as "C"). With a larger capacity than AA but a more compact size than R20, they work well in devices with moderate or variable power consumption, e.g.:
- Electronic toys (especially larger ones)
- Hiking and camping flashlights
- Portable speakers
- Portable radios
Their additional capacity compared to AA allows the devices to work longer, while not taking up as much space as the R20.
Are you looking for good R14 batteries?, see these items in our store:
2 x everActive Pro Alkaline LR14/C (blister)
Reliable alkaline batteries from everActive.
PRO ALKALINE is the highest line of alkaline batteries for professional applications.
Capacity approx. 8000 mAh Battery.
See more in hurt.com.pl: R14 alkaline batteries
Battery R20 - (D)
Dimensions:
- 34.2 mm × 61.5 mm
Application:
R20 batteries are much larger and have a higher energy potential. They are used in devices that require more power, for example:
- Industrial flashlights and emergency equipment
- Radios and communication equipment
- 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.
Are you looking for good R20 batteries, see these items in our store:
12 x D/LR20 (R20) everActive Pro Alkaline batteries (carton)
- Capacity [mAh]: 17500
- Voltage [V]: 1.5
See more in hurt.com.pl: R20 alkaline batteries
CR2032 battery – small but versatile
Dimensions:
- Diameter: 20 mm
- Thickness: 3.2mm
Application:
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 size and voltage stability, CR2032 is trusted in applications that require precise and reliable power supply.
Are you looking for good 2032 batteries?, see these items in our store:
2 x CR2032 everActive Lithium Batteries
- blister 2 pieces
- voltage [V]: 3.0
- Diameter [mm]: 20.0
- height [mm]: 3.2
- capacity [mAh]: 220
- Batteries with a long expiration date
Duracell CR2032 2BL
Voltage [V]: 3.0
diameter [mm]: 20.0 in
Height [mm]: 3.2 in
Batteries with a long expiry date
See more in hurt.com.pl: 2032 Lithium Batteries
Summary of battery types in the table
Below is a table summarizing the most important features of the discussed types of batteries:
| Battery Type | Dimensions | Application examples |
| AAA (R03) | 10.5mm × 44.5mm | Remote controls, wall watches, small electronics |
| AA (R6) | 14.5 mm × 50.5 mm | Remote controls, mice, toys, flashlights |
| R14 (C) | 26.2 mm × 50.0 mm | Toys, Travel Flashlights, Portable Speakers, Radios |
| R20 (D) | 34.2 mm × 61.5 mm | Industrial flashlights, radios, high-power devices |
| CR2032 | Diameter: 20mm; Thickness: 3.2mm | Watches, car remote controls, calculators |
Technological differences
In the world of batteries, technology is critical to 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
Cons:
- Usually lower efficiency and shorter service life
- 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 the 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 prone to 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 work in difficult conditions.
Rechargeable batteries or disposable batteries ?
The decision to use rechargeable batteries and disposable batteries is a topic that arouses a lot of emotions. In recent years , NiMH (nickel-metal hydride) batteries have grown in popularity, as they are an environmentally friendly alternative to traditional disposable batteries.
Advantages of NiMH batteries:
- Financial savings: Although the investment in batteries is higher at the beginning, repeated charging allows for long-term savings.
- Environmentally friendly: Less consumption of disposable batteries means less e-waste and benefits nature.
- Stable performance: Rechargeable batteries often have an even discharge, which ensures a constant voltage for a longer period of time.
Disadvantages of NiMH batteries:
- Lower capacity: Compared to alkaline batteries, some rechargeable batteries may have a slightly smaller capacity with lower power consumption.
- Memory effect: Although modern models are more resistant to the memory effect, improper loading can affect their performance.
- Charging time: Unlike disposable batteries, which are ready to use, rechargeable batteries require 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 or rechargeable battery for the device?
Choosing the right battery is not accidental – there are several key factors to consider that affect the proper operation of the device. Below are the most important criteria:
- Voltage:
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 lead to damage to the device. - Capacity:
Expressed in milliampere-hours (mAh), the capacity of the battery or rechargeable battery determines the length of life of the device. For devices with high power consumption, choose batteries or rechargeable batteries with a larger capacity. - Manufacturing technology:
The choice between alkaline, lithium or zinc-carbon batteries depends on the specifics of use. Lithium batteries are great for applications that require a stable voltage, while alkaline batteries are often sufficient for the average user. - Device Type:
It's a good idea to check if your device manufacturer recommends using specific types of batteries. Some gadgets, especially those with high energy requirements, may not work properly using low-performance batteries.
The most common mistakes when choosing a battery
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 devices with high power consumption:
Choosing a low-performance battery to power an industrial flashlight or radio can result in rapid discharge. - Mixing different types of batteries in one device:
Combining batteries with different technologies or levels of charge 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 can degrade battery performance, leading to leaks or loss of capacity. It is always a good idea to follow the manufacturer's recommendations for storage conditions.