Battery life hasn’t exactly been a strong point for foldables so far, but that might be starting to shift. A recent ...

A battery test shows iPhone 17 gains are real but modest, with eSIM-only models likely lasting longer thanks to larger batteries.

Donut Lab’s fast-charge demo beat many e-motorcycles, but 400 Wh/kg and 100,000-cycle claims remain unverified after the fourth test.

The Donut Lab solid-state battery was heated to the boiling point of water. Here’s what happened next.

Finnish startup Donut Lab has just released the third independent test of its solid-state ...

While car batteries die more quickly in hot weather, keeping on top of things during the winter is still essential. Here's why: Cold temperatures reduce a battery's cranking power. A battery that's ...

The iPhone Air isn't selling as well as the three iPhone 17 models, which are still sold out in various markets, but there's no question the handset is a head-turner. While the ultra-thin profile and ...

Skepticism grows around Donut Lab’s “impossible” battery as experts debate capacitor-like behavior and scarce independent test data.

Its lithium-ion battery will eventually refuse to hold a charge, as degradation via charging and time catch up with the device. The electrolyte inside will stop working, and it’ll be time to repair or ...