Fast-charging lithium-ion batteries are ubiquitous, powering everything from cellphones and laptops to electric vehicles.

Huawei just unveiled a new EV megawatt charging system that can add around 250 miles of range in just five minutes—fast enough to make waiting around for a charge feel like a thing of the past.

The Galaxy S10 5G from 2019 was Samsung’s first smartphone to offer Super Fast Charging, with support for up to 25W of power. The company one-upped itself a few months later with the Galaxy Note ...

Is your phone, tablet, or laptop typically in the battery red zone before the day's end? These portable chargers and power banks give you the most boost when you're out of juice. I’m a Mobile ...