Read more: 12 Major TV Brands Ranked Worst To Best By Customer Satisfaction With a 4.5-star rating on Amazon, the Pale Blue ...

For a lot of people, USB-powered flashlights have become a more convenient option than ones relying on AA or AAA batteries, as USB chargers are near-ubiquitous in most of our homes and you never ...

[Ray’s] breadboard power supply lets you drain the last traces of power from ‘dead’ AA batteries. Electronics that are powered off of disposable alkaline batteries have a cutoff voltage that ...

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 ...