Your batteries died, you tossed them, and now you're not sure which one to buy as you stare at a rack or online list of different size batteries. Why are there so many options when it comes to finding the right size and type of battery? 

Life would be much easier if everything ran on the same battery size! However, there are specific reasons why some devices need a AAA battery instead of a AA. 

Keep reading to learn what different battery sizes mean!

Size Matters

We hate to be cliché, but size does matter when it comes to powering an electronic device. Smaller devices don't require as much power as most larger devices.

Every battery is a self-contained bundle of power to charge something that requires electricity without an electrical cord. 

Not only do you need a bigger battery size to run a large flashlight or another big device, you probably need more than one large battery. Using a large battery with too much power can overwhelm a small device and make it useless. 

A Device Tells You What It Needs

Fortunately, you don't have to figure out which size battery your devices need. You can't force a large battery where a small battery belongs, and several AA batteries won't work in place of a C or D battery size. 

Keep Common Household Batteries On Hand

Keeping a few spare batteries around the house can help you stay prepared when one of your devices runs out of battery power. Always replace a dead battery with the same size battery!  

Most household devices use one of these standard battery sizes:

• AAA—These are the smallest standard-size batteries for many small household electronics. TV remotes, digital cameras, and small clocks often come fitted for AAA batteries. 
• AA—Slightly larger than the AAA battery, AA batteries are also standard in small electronics, clocks, and other devices. 
• C—Devices that use these batteries are less common than they were several years ago. You might find them in some types of flashlights and headlamps.
• D—Large flashlights typically require several D batteries to shine their light. These are the larges of the most common household batteries for household devices.
• 9v—Your smoke detector probably requires a 9v battery to stay powered and keep you safe!

Other Types of Battery Sizes

First responders and outdoor enthusiasts who carry small powerful flashlights often need C123A batteries. With an adaptor, some of these same flashlights can also use AA batteries. 

Watches, hearing aids, and other electronic devices often require disc batteries like the common CR2032. 

Choose the Right Battery Sizes For Your Devices!

Always use the right battery sizes for your devices. When you find the size you need, you also have options for single-use or rechargeable batteries to your devices powered!

If you're not sure which battery is the correct size for your small electronics or larger lawn equipment and power sports, we can help! Contact us here.