Abstract: This paper explores the steady-state behavior of PT-symmetric wireless power transfer (WPT) systems with battery loads using coupled-mode theory. Two operating regimes are identified: the PT ...

Car batteries fail without warning from the visible signs most drivers recognize. The internal chemical degradation that causes failure is invisible from the outside until the battery can no longer ...

The Finnish startup’s pack can charge from 0 to 80 percent in under 5 minutes, according to its first independent test. The Finnish startup’s pack can charge from 0 to 80 percent in under 5 minutes, ...

As Managing Editor, I lead CNET's mobile team, covering news and reviews on smartphones, wireless carriers, AI, wearables and more. I oversee the team's product testing and translate our findings into ...

Although a lower capacity than a separate power bank, having the battery pack built into a protective case means you don’t have to remember to carry another device with you, and functions both to ...

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 ...

A broad new smartphone test has found that Apple devices lead the industry for battery life, with the iPhone 17 Pro Max ranking as the longest-lasting phone tested and Apple tied as the top overall ...

Chao Hu is at the School of Mechanical, Aerospace, and Manufacturing Engineering, University of Connecticut, Storrs, Connecticut 06269, USA. The second category, data-driven lifetime prediction, uses ...

During testing at Estonia’s 100 MW Kiisa battery park, both EstLink 1 and EstLink 2 tripped, triggering the most severe disturbance to the regional power grid since desynchronization from the Russian ...

The increasing complexity of embedded systems within battery management necessitates robust testing methodologies that accurately reflect real-world operating conditions. Mike Sandoval, vice president ...

I wore the world's first HDR10 smart glasses TCL's new E Ink tablet beats the Remarkable and Kindle Anker's new charger is one of the most unique I've ever seen Best laptop cooling pads Best flip ...