Worried about phantom power? Discover if a plugged-in USB charger drives up your bill, how to measure it yourself, and tips ...

So I've tended to assume, possibly stupidly, that if a device relies on a USB power connection at all then any old AC->USB power adapter is fine to use for it and substitutable for a computer USB port ...

How many watts can a USB port actually output? The answer depends on your cable and protocol. Here is the ultimate guide to ...

Designed for fast charging, with two ports, Apple says you can use this adaptor for most MacBook Air models, as well as ...

Nick Guy is a staff senior editor for Buy Side. He's been reviewing personal technology, accessories and myriad other products for more than a decade. Edited By Written by Staff Editor, Buy Side ...

It wasn't too many years ago you needed a backpack to carry a laptop charger. They were huge, got hot and came with thick, permanently attached, messy cords. That's no longer the case, thanks in large ...

The Charging Case Pro combines power, protection, and portability. It features a 10,000 mAh removable power bank with 30W ...

Update 12/05/18: Apple now sells an 18W USB-C power adapter for $26Remove non-product link. To use it with your iPhone, you still need to purchase a USB-C to Lightning cable. We haven’t tested it yet, ...