An optocoupler tester is a small device that helps verify whether an optocoupler is functioning properly or has failed. In labs and repair work, optocouplers often fail without clear signs. They may ...

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

Donut Lab has published results from its fourth battery test with Verge Motorcycles, demonstrating ...

Donut Lab's solid-state battery pack charged from 10-80% in 12 minutes at over 100 kW in a Verge TS Pro motorcycle, the first pack-level test of the controversial tech.

The Finnish startup’s pack can charge from 0 to 80 percent in under 5 minutes, according to its first independent test. The Finnish startup’s pack can charge from 0 to 80 percent in under 5 minutes, ...

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.

iPhone 17 Battery Test: Real-World Results Challenge Apple’s Big Claims Your email has been sent When Apple unveiled the iPhone 17 lineup, it talked up major battery gains. But a side-by-side test ...

YouTuber ScruffedBits has built what is effectively a homegrown UPS made from dozens of AA batteries. Some were rechargeable, but most were cheap disposables, and they were able to get a full-size ...

The Verge TS Pro, equipped with a solid-state battery, was plugged in at a fast-charging station. Here's how it performed.

Check out the latest stories, videos, and podcasts from the week of Mar. 9, 2026. Andy’s back from the 2026 Analog Aficionados meetup, held at DesignCon this year, and pieces together some history of ...

A 27-year-old engineer has powered an electric car using a homemade battery pack built out of discarded vapes.