Battery tech is having a quiet revolution. While phones and laptops grab the headlines, the humble AA and AAA cells that keep remotes, toys and headlamps alive are being rebuilt around the same USB-C ...

The latest generation of NiMH (Nickel-Metal Hydride) rechargeable batteries tend to have a low self-discharge rate. Why does it matter? Well, in the past, you’d often fully charge NiMH batteries only ...