ZDNET's latest Lab Awards highlight two portable power stations - one big and one small - for their efficiency. See the data below.

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.

To get straight to the point and the reason you're all here: battery life. Yes, the WP61 Plus has a battery. A very large, ...

You're late for an important appointment. Just as you are leaving your house, you realize your phone is flat. Imagine you ...

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

Australian scientists have made a significant leap forward in energy storage technology with the world's first ...

The Bluetti AC240 is water and dust-resistant, allowing it to withstand the worst Mother Nature can throw at it. It also earns a ZDNET Lab Award for its efficiency.

Although it dates back to the early days of the Marconi Company in the 1920s, the Franklin oscillator has remained a relatively obscure circuit, its memory mostly kept alive by ham radio operators ...