Lithium-ion batteries have been in the headlines recently after causing many fires in the city. Here are some answers to frequently asked questions about the common rechargeable power sources. A ...

Oct. 24, 2025 — A team of researchers has designed a theoretical model for a topological quantum battery capable of long-distance energy transfer and immunity to dissipation. By exploiting topological ...

Customers with dead, defective, or damaged Ryobi power tool batteries may be relieved to know that Home Depot offers options for a replacement. That being said, the replacement process comes with ...

Ajay has worked in tech journalism for over a decade as a reporter, analyst, product reviewer, and editor. He got his start in consumer tech, breaking Android news at Newsweek before going to PCMag, ...

There are six power banks on my desk right now. On the shelves behind me are a dozen (two dozen?) more. Over the past three years, I’ve tested more than 55 portable battery packs for Engadget — and ...

This is a standard PowerAo Wireless Controller, which means it uses AA batteries (included) and doesn't have back buttons. You can get up to 40 hours of game time before needing to swap out the ...

A prototype for now, the eQuad will spearhead a new Fastport B2B sub-brand and help deliver goods in urban areas. The business of delivering goods is a vast and complex one, and is only made more ...

When it comes to projectors, "portability" is an evolving concept. Three decades ago, 12-pound models that fit in an airplane overhead bin were the smallest and lightest available. Today, most ...