AA Battery vs. AAA Battery

What's the Difference?

AA batteries and AAA batteries are both commonly used in a variety of electronic devices. The main difference between the two lies in their size and capacity. AA batteries are larger and have a higher capacity, making them suitable for devices that require more power, such as digital cameras or remote controls. On the other hand, AAA batteries are smaller and have a lower capacity, making them ideal for smaller devices like portable gaming consoles or computer mice. While both types of batteries serve their purpose, the choice between AA and AAA ultimately depends on the specific needs of the device and the desired battery life.


AttributeAA BatteryAAA Battery
CapacityVaries (typically around 2000-3000mAh)Varies (typically around 1000-1500mAh)
UsageCommonly used in medium to high-drain devicesCommonly used in low-drain devices
Dimensions14.5mm diameter, 50.5mm height10.5mm diameter, 44.5mm height
WeightApproximately 23 gramsApproximately 11 grams
Common ApplicationsRemote controls, digital cameras, flashlightsTV remotes, computer mice, small toys
AvailabilityWidely availableWidely available

Further Detail


Batteries are an essential part of our daily lives, powering a wide range of devices from remote controls to flashlights. Two commonly used battery sizes are AA (double-A) and AAA (triple-A). While they may seem similar at first glance, there are several key differences between these two battery types. In this article, we will explore and compare the attributes of AA batteries and AAA batteries, shedding light on their similarities and differences.

Size and Shape

One of the most noticeable differences between AA and AAA batteries is their size and shape. AA batteries are larger and thicker compared to AAA batteries. AA batteries typically measure about 50.5mm in length and 14.5mm in diameter, while AAA batteries are smaller, measuring approximately 44.5mm in length and 10.5mm in diameter. Due to their size difference, AA batteries are often used in devices that require more power, such as digital cameras and portable speakers, while AAA batteries are commonly found in smaller devices like TV remotes and computer mice.

Capacity and Voltage

Another important aspect to consider when comparing AA and AAA batteries is their capacity and voltage. AA batteries generally have a higher capacity than AAA batteries, meaning they can store more energy and provide longer-lasting power. The typical capacity of an AA battery ranges from 1800mAh to 3000mAh, while AAA batteries usually have a capacity between 800mAh and 1200mAh. Additionally, AA batteries typically have a higher voltage rating of 1.5 volts, whereas AAA batteries usually have a voltage rating of 1.2 volts. This voltage difference can affect the performance of certain devices that require a specific voltage to operate optimally.


Due to their varying sizes, AA and AAA batteries find different applications in our daily lives. AA batteries are commonly used in high-drain devices that require more power, such as digital cameras, portable gaming consoles, and electronic toys. Their larger size allows them to deliver a higher current, making them suitable for devices that demand more energy. On the other hand, AAA batteries are often used in smaller, low-drain devices like TV remotes, wireless keyboards, and computer mice. Their compact size makes them ideal for these types of devices, where space is limited.

Availability and Cost

When it comes to availability and cost, AA batteries have a clear advantage. AA batteries are widely available in various brands and can be found in most stores that sell batteries. Due to their popularity and higher demand, AA batteries are generally more affordable compared to AAA batteries. On the other hand, AAA batteries, while still readily available, may not be as commonly stocked as AA batteries in some stores. Additionally, due to their smaller size and lower demand, AAA batteries tend to be slightly more expensive than AA batteries.

Environmental Impact

Considering the environmental impact is crucial when discussing batteries. Both AA and AAA batteries can be harmful to the environment if not disposed of properly. However, due to their larger size, AA batteries contain more materials and chemicals, making them potentially more harmful. It is important to recycle both AA and AAA batteries to prevent them from ending up in landfills. Many recycling centers and battery retailers offer battery recycling programs, allowing you to dispose of your used batteries responsibly.


In conclusion, while AA and AAA batteries may seem similar, they have distinct differences in terms of size, capacity, voltage, applications, availability, cost, and environmental impact. AA batteries are larger, have higher capacity and voltage, and are commonly used in high-drain devices. On the other hand, AAA batteries are smaller, have lower capacity and voltage, and are often used in low-drain devices. Both battery types have their own advantages and are readily available, but AA batteries tend to be more affordable and easier to find. Regardless of the battery type, it is important to recycle them to minimize their environmental impact. Understanding these differences can help you choose the right battery for your specific device and ensure optimal performance and longevity.

Comparisons may contain inaccurate information about people, places, or facts. Please report any issues.