Dead Rail” or “Power on Board” — no matter what you call it, the concept is the same: a model locomotive that carries its own power source. This eliminates the need for alternating or direct current ...

With alkaline or even NiMH batteries, you don't have to worry about swollen cells or volatile chemistry. Even the old issue ...

The increasing dominance of lithium cells in the market place leave our trusty NiMH cells in a rough spot. Sure, you can still get a chargers for the AAs in your life, but it’s old tech and not ...

If you need to charge your $1,000 cell phone, you can simply plug it in, or even more easily, just lay it on a charging mat. But what if something similar to NASA's $2.7 billion Perseverance rover has ...

With more than a decade of experience, Nelson covers Apple and Google and writes about iPhone and Android features, privacy and security settings, and more. That gut feeling that tells you to sprint ...

An unlikely hit of the last few months’ consumer hardware has been a power bank branded by the German confectionery company Haribo. It first gained attention in backpacking circles because of its high ...

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 ...

We independently review everything we recommend. We may get paid to link out to retailer sites, and when you buy through our links, we may earn a commission. Learn more› By Sarah Witman Sarah Witman ...

Learn how to choose the right batteries for AGV systems, including lithium-ion, lead-acid, and fast-charging options. This ...

Is your phone, tablet, or laptop typically in the battery red zone before the day's end? These portable chargers and power banks give you the most boost when you're out of juice. I’m a mobile writer ...