Consumer Reports has been testing battery lawn mowers for well over a decade and has watched them improve. More consumers are ...

I salvaged a large batch of 18650 cells from old laptop batteries and needed a way to figure out which ones were still worth ...

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 ...

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

In 2020, Volkswagen invested roughly €1 billion ($1.2 billion) in Gotion to acquire a 26% stake, making it the Chinese battery giant’s largest shareholder. Gotion will supply lithium iron phosphate ...

Should you buy a solid-state battery pack in 2026? My advice after weeks of testing ...

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 ...

After testing more than a dozen iPhone power banks, we found three great models that’ll charge your phone quickly and provide ...

During CES 2026, Donut Lab claimed it had built a solid-state battery that promised unprecedented energy density, longevity, and charging performance. Skeptics demolished Donut Lab's claims, but the ...

A new technique based on machine learning and stem cells may lead to personalized testing for hazardous chemicals and make toxin testing on animals a thing of the past. Dubbed ‘forever chemicals’ ...

If your iPhone iPhone 14 battery drains faster than expected—often requiring multiple charges per day—the cause can be either software-related or a worn-out battery. Use these steps to identify and ...