If you're looking for an inexpensive USB gadget that will definitely find a permanent place in your backpack, add this to ...

Smartphone batteries don’t always last through a busy day, but a pocket-size USB battery pack can give your handset enough of a boost to survive the evening. After 40 hours of research and 65 hours of ...

Arguably the most useful part of USB’s power capabilities is the ability to charge batteries in portable devices, but there is more to battery charging than picking a power source, USB or otherwise.

thanks to everyone’s great feedback, i’ve now got a usb battery that’s much more efficient and capable of delivering more current to a portable device. like i promised, i put together a slick little ...