Common types of batteries include AAA, AA, 9V, 18650, and 2032.

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Ngày cập nhật gần nhất: 1/2/2026

Batteries are an integral part of our daily lives, powering everything from phones and laptops to toys and even kitchen appliances like gas stoves.Cylindrical Batteries

AAA and AA Batteries

Arguably the most ubiquitous battery sizes, '3A' and '2A', commonly known as AAA and AA batteries respectively, find widespread use in TV remotes, wall clocks, and children's toys. Both types operate at a voltage of 1.5V for regular variants and 1.2 - 1.35V for rechargeable ones.

The AAA and AA batteries stand as some of the oldest battery standards globally. The AAA battery debuted in 1911, while the AA battery made its entrance in 1907. AAA and AA are commercial names; their technical designations, LR03 for AAA and LR6 for AA, were assigned by the International Electrotechnical Commission (IEC).

A and AAAA Batteries

Less common than the aforementioned 3A and 2A battery sizes, the A battery, scientifically known as LR23, measures 17 x 50mm, equivalent in height to a 2A battery but slightly thicker. Presently, A batteries are not widely utilized and are rather rare to encounter. The AAAA battery, also referred to as 4A battery, officially named LR8D425 based on its dimensions of 8 x 42.5mm, merely surpasses half the size of an AA battery. Both 1A and 4A batteries operate at a voltage of 1.5V, similar to 2A and 3A batteries. Due to its compact size, the 4A battery finds application in small flashlight, pocket calculators, fishing reel spinners, stylus pens, and more.

Battery B

The scientific name for Battery B is LR12, doubling the size of AA batteries at 21.5 x 60mm. Historically, this type of battery was commonly used in the EU as a 3LR12 4.5V battery composed of three B batteries connected together.

Battery C

Battery C, also known as LR14, boasts an average capacity of 6000mAh. However, due to its large size, it is relatively uncommon. Battery C is predominantly used as a spark plug battery in gas stoves.

If one fine day your gas stove refuses to ignite (no more 'click click click' sound), then check if it's running out of battery. Typically, single-burner stoves use Battery C, while double-burner stoves use Battery D.

Battery D

Battery D, also known as LR20, commonly referred to as 'large battery' in Vietnam, is the battery with the largest capacity among cylindrical batteries, reaching up to 12,000mAh. It is typically used in large-sized flashlight models. I own a Maglite flashlight that uses 6 D batteries and lasts for a very long time; it takes 3 years to replace the batteries once. All types of batteries A, B, C, and D operate at a voltage of 1.5V.

Battery A23 and A27

These are two small but mighty batteries, Battery A23/8LR932 boasts a voltage of up to 12V as it is comprised of 8 LR932 button cells connected in series. If you peel off the metal casing of the A23 battery, you'll find 8 button cells inside, each with a voltage of 1.5 x 8 = 12V.

Similarly, Battery A27/8LR732 is constructed in the same way, comprised of 8 LR732 button cells, also with a voltage of 12V just like Battery A23. Battery A23 and A27 are commonly used in various devices such as garage door remotes, car alarm remotes, motorcycle anti-theft remotes, and more.

Battery A27 consists of 8 LR732 cells assembled together.

Battery 18650

This is one of the most common battery types today alongside AA and AAA batteries. The 18650 battery is named after its dimensions: its diameter is 18mm and its length is 65mm.

Each 18650 battery is referred to as a cell. This is a rechargeable battery with a standard voltage of 3.7V, which can reach up to 4.2V when fully charged. These battery cells are used to make laptop batteries, handheld fan batteries, LED flashlight batteries, and many portable chargers also use 18650 battery cells. Rectangular Batteries There are many types of rectangular batteries, but perhaps the most common is the 9V battery. Around the year 2000, this type of battery was very popular in Vietnam and was often seen in wireless microphones, walkie-talkies, remote-controlled cars, toy robots, etc., but nowadays, this type of battery is relatively rare.

Button Cell Batteries Also known as coin batteries because of their shape and size, which are equivalent to shirt buttons. Button cell batteries come in many different sizes and are mainly used in wristwatches. Typically, the voltage of button cell batteries is 1.5V.

CR Round Batteries Similar to button cell batteries, CR batteries have a larger diameter and thinner thickness. Some common sizes of CR batteries are CR2016, CR2025, CR2032, where 20 represents the diameter of 20mm and 16/25/32 represents the corresponding thickness of the battery in millimeters (1.6/2.5/3.2mm).

CR batteries have a voltage of 3V and are used for wristwatches, digital thermometers, handheld blood glucose meters, computer CMOS batteries (CR2032), automotive tire pressure sensors, remote keyless entry systems for automobiles, and more. Not all batteries of the same type are created equal Here's a story: I have a Tissot watch that uses CR2032 batteries. About 2 years ago, it ran out of battery, so I bought genuine Panasonic CR2032 batteries to replace them. However, they only lasted about a week before running out again, and the same thing happened with both batteries.

CR2032, CR2025, CR2016 batteries are all available from official retailers in Vietnam

I recently took my watch to the authorized Tissot service center on NTMK Street, District 1. The staff there informed me that since my watch is Made in Switzerland, it should use Swiss-made batteries. They mentioned that Japanese and Chinese batteries deplete quickly and can damage the watch. They replaced the battery for 350,000 VND and provided a 3-year warranty for the battery. This means that if the battery runs out within 3 years, it will be replaced free of charge. Interestingly, the battery still hasn't run out. With hundreds of different battery types alone, not to mention various types of rechargeable batteries, phone batteries, electric vehicle batteries, etc., there's a wide array of options to consider. Are you interested in batteries? Feel free to share your thoughts!

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