CR123A vs. AA Batteries: Which Should You Use for Your Flashlight?

There are many types of batteries used to power flashlights, but CR123A and AA are the most common. AA batteries have been around for quite a while, and are available almost every you go. CR123 batteries are lithium-cell powered and have been gaining popularity in recent years. There are several differences between these two types, and each has its advantages and disadvantages. Let's take a look at what each has to offer:

AA batteries

AA cr123 batteries are sometimes referred to as AA alkaline batteries because of their chemical composition. They are still a popular choice primarily you can find them almost anywhere. If you needed batteries for your flashlight, you can be sure that the local grocery store stocks them.

 AA batteries are considered adequate for items that use up resources slowly. For high load applications, however, they are likely to fall short. Standard AA batteries have about 700mAh when used in powerful flashlights. This is much lower than what the lithium cell batteries can offer.

In terms of weight, AA batteries are heavier than CR123A batteries, with the average weight being about 0.9 oz. The batteries measure 2.0" in length and 0.5" in diameter. Flashlights made for AA batteries are longer and slimmer than those made for CR123 batteries. Check out for more info about batteries.

CR123A Batteries

These are lithium-celled batteries, as mentioned before. Lithium provides higher voltages, making these batteries more powerful than the alkaline AA variety. These batteries have an output of 3.0V, compared to the 1.5V output of AAs. So if you want a flashlight that shines brighter, the CR123 battery is the way to go. It will also last long because it comes with a higher capacity. Compared to the AA's 700mAh, the lithium cell battery offers 1500mAh, about double the capacity.

CR123A batteries are also about 33% lighter than AA's at 0.6 oz. They are 1.3" long 0.6" in diameter. Flashlights made for this variety are therefore shorter and wider.

The main issues with cr123 rechargeable batteries are their cost and availability. But this shouldn't be a major concern as you can order online in bulk if they are not locally available. And because they last longer than alkaline batteries, it will be quite some time before you need to order another pack.

In summary, you should go for AA batteries if you just need something simple for. But if you want more power and runtime, CR123 batteries would be the better choice.