AA VS AAA Battery, What Is The Difference?


AA and AAA batteries are one of the most widely used types of batteries in the world. They are used in various applications, from toys to cell phones. AA and AAA batteries are common, convenient, and relatively inexpensive. They come in a variety of capacities and sizes. They provide a reliable power source for everyday devices, making them an essential part of the modern lifestyle. So AA VS AAA battery, what is the difference? In this article, you will learn the uses of each of these batteries and the differences that exist between them.

Description of AA batteries

The AA battery is among the most popular and widely used batteries globally. It is used in a variety of devices, such as cameras, toys, remote controls, and flashlights. AA batteries are also known as double-A batteries because of their size. AA battery can be a disposable battery, such as an alkaline battery. It can also be a rechargeable battery, such as a lithium-ion battery.

Types of AA batteries

Alkaline AA battery

  • Alkaline AA battery:

It is the type of AA battery that is most common. Alkaline batteries are designed to last longer than other types of batteries, and they can provide a steady current over a more extended time.

  • Rechargeable AA battery:

Rechargeable AA batteries can be recharged by plugging them into a charger and charging them for a specific time. Rechargeable AA batteries are more expensive than alkaline batteries, but they can be recharged and used multiple times, making them a more cost-effective option in the long run.

When choosing an AA battery, it is essential to consider the application in which it will be used. Alkaline batteries are best suited for low-drain devices such as remote controls and flashlights, while rechargeable batteries are the best option for high-drain applications such as digital cameras. Additionally, it is important to pay attention to the battery’s voltage, as some devices require a specific voltage to operate properly.
AA batteries are an essential part of many electronic devices, and they are a reliable, cost-effective power source. By understanding the different types of AA batteries, as well as the applications for which they are best suited, consumers can ensure that their devices are powered properly and effectively.

Description of AAA batteries

Alkaline AAA battery

The AAA battery is used in everyday household items such as TV remotes, toys, flashlights, and portable electronics. AAA battery is an incredibly versatile type of battery. They are one of the smallest sizes of batteries, measuring just 44.5 millimeters long and 10.5 millimeters in diameter. This makes them an ideal choice for powering small devices with limited space for a battery. AAA batteries are also one of the most affordable, making them a popular choice for budget-conscious consumers. Like AA batteries, they are also divided into two categories: non-rechargeable and rechargeable batteries.

Types of AAA batteries

  • Alkaline AAA battery:

This is the most commonly used type and is typically the most affordable. They are designed to provide a steady power output over a long time, making them ideal for powering items such as remote controls.

  • Rechargeable AAA battery:

These are slightly more expensive but are designed to be recharged and used multiple times.

AAA batteries can provide a wide range of power output, depending on the brand and type of battery. Most AAA alkaline batteries can provide up to 1.5 volts of power, while rechargeable AAA batteries can provide up to 1.2 volts. The battery’s capacity also depends on the brand and type.  The capacity of Alkaline AAA batteries is of 800 to 900 mAh. On the other hand, the capacity of rechargeable AAA batteries is 1000 to 1200 mAh.

Differences between AA VS AAA batteries

aa vs aaa battery

AA VS AAA battery sizes is two common sizes of batteries available today. While both of these batteries are popular and widely used, they have several differences. Knowing the differences between AA vs AAA battery can help you make the best choice when selecting a battery for your device.

1. Size and capacity

The primary difference between AAA battery VS AA battery is their size and capacity. AA batteries are larger than AAA batteries, measuring 50.5 mm long and 14.5 mm in diameter. In comparison, AAA batteries measure 44.5 mm long and 10.5 mm in diameter. As a result, AA batteries have a much higher capacity than AAA batteries. The typical AA has 1.5 Volts and 2000 mAh capacity, while AAA batteries have 1.5 Volts and 800 mAh capacity.

2. Cost

Another difference between AAA batteries VS AA is their cost. AA batteries are more expensive than AAA batteries due to their larger size and higher capacity. This is especially true for rechargeable batteries, where the cost of AA batteries is typically double that of AAA batteries.

3. Durability

AA battery VS AAA also differs in terms of their durability. AA batteries are generally more durable than AAA batteries, as their larger size allows for a higher capacity and longer life. AAA batteries, on the other hand, are more prone to leakage and damage due to their smaller size and lower capacity.

4. Applications

The differences between AA VS AAA battery also extend to their applications. AA batteries are the preferred choice for high-power applications such as digital cameras and remote controls. In contrast, AAA batteries are most commonly used in low-power applications such as calculators and watches.


AA VS AAA battery are two of the most common sizes of batteries available today. At the same time, both of these batteries are popular and widely used. There are several differences between them. These differences include size and capacity, cost, durability, and applications. Knowing the differences between AAA VS AA battery can help you make the best choice when selecting a battery for your device.

Leave a Reply