Basically, VTT hooked up Donut Lab’s to a battery tester and left it idle for 10 days, while measuring the voltage every 10 seconds. According to the results, the cell demonstrated high stability, ...

Finnish startup Donut Lab's third test shows its solid-state battery retains charge for 10 days, proving it isn't a supercapacitor.

Donut Lab released the third independent test of its controversial solid-state battery, this time trying to prove it's not a ...

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.

Scrolling and streaming suck plenty of power on today's Android phones. Here's how to squeeze the most juice out of your battery, including a new option to monitor battery-hungry apps.

Choosing the right RV battery setup can make or break your time on the road. Whether you’re boondocking in the desert or topping off your devices at a full-hookup campground, your power source needs ...

Rechargeable batteries are everywhere—from portable electronic devices and electric vehicles to renewable energy storage.

The company, long focused on cars and trucks, plans to begin manufacturing large batteries used by utilities, data centers, other businesses and homeowners. Ford’s closed battery plant in Glendale, Ky ...

2025 brought big changes to the smartphone battery department, with manufacturers adding silicon-carbon batteries that massively increase capacity without increasing the size of the battery or, by ...

It is common knowledge that communicating over WiFi is more efficient than using the 5G cellular network, but by how much exactly? That’s exactly what PhoneBuff set out to measure in its latest ...

This video puts the iPhone 17 through an extended battery test designed to mirror real-world usage. Screen time, background tasks, and performance demands are pushed consistently over many hours. As ...

Hithium has released results from a large-scale fire safety test of its 6.25 MWh “∞Power” battery energy storage system, with an open-door configuration supervised by UL Solutions to assess thermal ...