Donut Lab's third independent VTT test confirms its solid-state battery retains 97.7% capacity after 240 hours idle. Energy density and cycle life remain untested.

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

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

Donut Lab has had the world's first solid-state battery ready for production vehicles measured in independent testing ...

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

Knowing your iPad battery health helps you decide when it's time for a new tablet. Image: Ed Hardy/Cult of Mac Checking the health and maximum capacity of the battery in older iPad models isn’t as ...

A simple trick every iPad owner should know.

Batteries lose capacity over time. The process can be slowed down, but it’s inevitable, so after a few years, your EV won’t provide quite as much range as when it was new. The battery will lose about ...

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