Moderate drop: Indicates partial aging — monitor closely and retest soon. Severe drop or collapse: The battery is nearing end-of-life or has an internal fault. Tracking battery load test results helps ...

Momodou Wurry Jallow, an electrical engineering major at Alfred University, gives a demonstration on battery testing equipment installed in a lab in the McMahon Engineering Building. The demonstration ...

Discover the real lifespan of EV batteries, average degradation rates, and how to test used electric cars to avoid costly ...

I looked at three years of exclusive CNET data of iPhone performance to find out which models hold their charges best. As Managing Editor, I lead CNET's mobile team, covering news and reviews on ...

U.S. energy needs have changed dramatically over the last few decades, and questions are growing as to whether our grid can manage these new demands. Aside from rising temperatures—the National ...

An organic and almost entirely recyclable battery could be an answer to utlities' search for higher-performance, more environmentally friendly ways of storing energy and releasing it as needed to ...

Call it the laptop that would not die. We just crowned our first PCMag Lab Award winner for best battery life, an MSI ...