Safety test of Samsung 2600 mAh lithium batteries used in e‑bikes. We test overcharging, short circuits, punctures, and extreme heat to see how protections work and how dangerous damaged lithium cells ...

Researchers have uncovered the mechanical properties of the nanoscale "thorns" that develop inside lithium-ion batteries, which can cause them to short circuit and die – or worse, such as ...

The world’s first solid-state battery, announced by Donut Lab, has sparked interest for its potential advancements over traditional lithium-ion technology. While marketed as a breakthrough in energy ...

Donut Lab, a Finnish solid-state battery maker, claims its cells retained 97.7% of their charge after sitting idle for 10 days, a figure that, if independently confirmed, would represent a sharp ...

Portable chargers — the compact, rechargeable power banks tucked into millions of carry-on bags — have quietly become one of the fastest-growing fire hazards in the sky. Airlines and international ...