Which 2026 flagship has the best battery life? We put the iPhone 17 Pro, Galaxy S26 Ultra, and Pixel 10 through an extreme ...

We may receive a commission on purchases made from links. If you've had to replace the battery in an Apple AirTag, you've seen a CR2032 battery up close. The performance of the 3-volt CR2032 lithium ...

There was speculation that Donut Lab’s battery was able to discharge energy so quickly because it was a supercapacitor in disguise. So the startup set out to disprove that claim. There was speculation ...

Donut Lab released a new test showing its solid-state EV battery retained 97.7% charge after 10 days, aiming to prove critics wrong who claimed it wasn’t a real battery. Donut Lab released a new test ...

The Finnish startup’s battery not only survived extreme heat conditions, it actually gained capacity. The Finnish startup’s battery not only survived extreme heat conditions, it actually gained ...

Donut Lab’s solid-state, lithium-free battery has undergone a second round of independent testing, revealing both promising results and critical gaps. Conducted by Finland’s VTT research center, the ...

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

Donut Lab has released five VTT test reports on its solid-state battery, but none address the 400 Wh/kg energy density or 100 ...

Donut Lab has released a second set of independent test results for its controversial solid-state battery — this time proving the cell can discharge at extreme temperatures up to 100°C and actually ...

Finnish startup Donut Lab released its third independent test result Monday, the latest in a series of weekly rollouts related to what it claims is the world's first production-ready all-solid-state ...

I've been reviewing hardware and software, devising testing methodology and handed out buying advice for what seems like forever; I'm currently absorbed by computers and gaming hardware, but ...