Found in Apple AirTags, the CR2032 button cell battery, also known as a coin battery, is actually surprisingly easy to test ...

VTT's second independent test shows Donut Lab's solid-state cell delivered 110% capacity at 80°C and survived 100°C discharge ...

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

Donut Lab solid-state battery retest by Finland’s VTT shows capacity rising to 110% at 80C, but weight data is still missing.

Lithium-ion batteries with liquid electrolytes are more susceptible to extreme heat. If a liquid battery gets too hot, the liquid can vaporize and catch fire — a process called thermal runaway. And at ...

As part of its 'I Donut Believe' campaign, Finnish battery developer Donut Lab has published further independent test results for its disputed solid-state ...

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

Independent high-temperature testing suggests the Donut Battery doesn’t just survive extreme heat, it improves efficiency — ...

The big reveal at CES of a production-ready solid-state battery needs backup.

Flagship smartphones differ significantly in their battery capacities and underlying technologies. The Samsung S26 Ultra, iPhone 17 Pro Max, and Google Pixel 10 Pro XL are equipped with batteries in ...

If you were to take a laptop on a plane or away for a ski weekend, how long would it last streaming Netflix before it ran out of battery? It’s a good question, and one that deserves an answer. I’ve ...

One core functional block common to most all mobile phone and laptop power management systems is the battery charger. Test requirements for evaluating its many functions are extensive. Replacing ...