A and AAA batteries share a lot in common. There's a good chance that you've probably mixed them up yourself once or twice. But that doesn't mean they're interchangeable. 

A mix-up happens to the best of us. But besides some slight size differences, what else is different between an AA vs AAA battery?

Well, lucky for you, we've got answers. Continue reading and we'll walk you through everything you need to know. 

How These Batteries Work

Both AA and AAA batteries have a cathode (positive side) and anode (negative side). Each of those sides gets hooked up to an electrical circuit. Inside of the battery, chemical reactions lead to a buildup of electrons at the negative end. 

This results in an electrical difference between the cathode and the anode. The electrons then travel through the device and make their way to the cathode. This powers the device. 

AA Battery

AA batteries are also known as Mignon, which is a French word that translates to "dainty." These are the standard-sized dry cell or single-cell batteries. They are sometimes referred to as dry cell batteries because they have just enough moisture to let the current pass through. 

These batteries produce around 1.5 volts of electricity. They can also function in any orientation or position without spills. AA batteries measure 1.9 inches in length and are cylindrical in shape. 

They contain around three times the capacity of AAA batteries because they're bigger. These batteries are usually used in larger portable equipment and big toys.

AA batteries are built for electronic devices that draw more current, such as digital cameras. The high cost of the battery is offset by the fact that they last a long time and provide a constant voltage during discharge. 

A lithium disulfide AA battery is less likely to leak than an alkaline battery.

AAA Battery

AAA batteries deliver the same amount of voltage that AA batteries do - 1.5 volts of electricity. They also sport a similar shape but are smaller in both diameter and length - around 1.75 inches long. 

AAA batteries are usually used for portable, compact devices like television remote controls and alarm clocks. Because many portable devices are being built as more efficient and smaller, devices that used to rely on AA batteries now use AAA batteries. 

Alkaline AAA batteries will weigh around 11.5 grams while primary lithium AAA batteries will come in at around 7.5 grams. AAA batteries that are made out of rechargeable nickel-metal hydride (NIMH) usually weigh around 14. 5 grams.  

AA Vs. AAA Battery: The Importance of Knowing the Difference

As we can see, the differences when it comes to an AA vs AAA battery is slight but significant. Even though these batteries deliver the same amount of electrical voltage, their different sizes mean that they are compatible with different objects. 

Despite their differences, however, both of these battery types are extremely important for helping common and even life-saving devices function properly. 

Are you looking for some batteries to power your devices? If so, contact us today and see how we can help you!