Rechargeable batteries are more expensive than single-use batteries, but in the long run they can save you money. In addition, they are also better for the environment.
In our guide, we focus on AA and AAA batteries because they are by far the most popular rechargeable battery sizes. Many of the brands we cover also offer their batteries in sizes C and D. In fact, the Panasonic Eneloop also offers Spacers C and D. by doing so you can use AA batteries in devices that require C and D batteries.
We also focus on low self-discharge (LSD) batteries of nickel-metal hydride (NiMH). Almost all rechargeable AA and AAA batteries use NiMH because of their large capacity, and LSD batteries are the best because they hold the charge for longer when your device is not in use.
Battery capacity is measured in milliamp hours (mAh). And, most standard rechargeable AA batteries are rated for 2,000mAh and AAAs are 800mAh with light, generally insignificant differences between brands. That’s why many of the experts only advise to pay attention to the costs per battery and go with the most economical brand cell. You need to avoid knockoffs and discount brands. They rarely perform properly and could damage your devices and your charger.
During the search for the best rechargeable batteries, we looked at thousands of reviews and reviews from buyers and experts from many brands. Our guide presents batteries that are affordable, provide their capacity assessments, and will withstand hundreds of charge cycles.