Amazon Basics Pre-Charged NiMH Rechargeable AA Batteries, 8-Pack

As the most popular battery size, AA batteries work with numerous items such as flashlights, handheld games, toys, digital cameras and TV remotes. This means it’s easy to go through a lot and have to order replacements. So, if you want to ultimately save money and contribute less waste, buying rechargeable AA batteries gives you the convenience of being able to simply recharge them whenever they run out of power. They also often come pre-charged and ready to use.

Rechargeable AA batteries come in two forms: nickel-cadmium (NiCAD) and nickel-metal hydride (NiMH). NiCAD batteries tend to cost less, allow for more charging cycles and charge more quickly, but they may not be the best option for high-drain electronics. NiMH batteries are more popular today since they can handle more powerful devices and last longer, but they do come at a higher price.

Regardless of which type you choose, you should check the capacity that is measured in milliamperes per hour (mAH). This indicates how much power the batteries have stored in them and ultimately how long your device will run, although performance will depend on the type of device powered. Most rechargeable AA batteries have an mAH of 2,000 to 2,800. While an mAH rating on the lower side can be fine for items like electronic toothbrushes or remotes, you’ll likely want a higher mAH for high-drain gadgets like digital cameras.

The lifespan and self-discharge rate are also important factors to look for when you’re shopping for rechargeable AA batteries. You’ll often see the lifespan mentioned as a certain number of charging cycles, and some brands list over 2,000 cycles before you’d need to replace the batteries. The self-discharge rate matters since your batteries’ capacity will drain simply from non-use, so looking for low self-discharge options is recommended.  

You should also consider how many rechargeable AA batteries to get and whether you need accessories. It helps to get a large pack since the batteries have so many uses, and a storage container comes in handy. You’ll also need a compatible charger, which you can either buy alone or get a battery and charger set.