Electric-car batteries are similar to, but far from the same as, a basic AA or AAA battery. This guide ought to help you understand EV batteries.

We've tested and reviewed products since 1936. Read CR's review of the EcoAlkalines AA Alkaline battery to find out if it's worth it.

We've tested and reviewed products since 1936. Read CR's review of the AAA NAPA Premium 94R 8494RAAA car battery to find out if it's worth it.

On Wednesday, Elevation Lab announced TimeCapsule, a new $20 battery case purported to extend Apple AirTag battery life from one year to 10 years. The product replaces the standard CR2032 coin ...

Duracell alleged that the sole basis for Energizer’s 10% claim is a comparison of the two brands’ AA batteries under one industry standard, but battery performance is also measured by other ...

Duracell alleged that the sole basis for Energizer’s 10% claim is a comparison of the two brands’ AA batteries under one industry standard, but battery performance is also measured by other ...