In this article, I will take apart a Li-ion alternative to the classic 6F22 9V battery. This battery is a Chinese 9V/500mAh USB rechargeable Li-ion battery (sold under the brand name infinite). The ...

Sure you could go buy a USB charger off the shelf, but what fun would that be? Try making one yourself with a little help from a 9V battery and a few extra components. This simple hack on a standard ...

Makers, hobbyists and developers that are looking for a way to use USB ports to provide constant 9V or 12V power supplies may be interested in a new device created by FemtoCow called the USB 912. The ...

Battery tech is having a quiet revolution. While phones and laptops grab the headlines, the humble AA and AAA cells that keep remotes, toys and headlamps alive are being rebuilt around the same USB-C ...

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 ...

Since I’m starting to use more 9V rechargeable batteries, I thought it would be a good idea to build a simple 9V rechargeable battery for my friendly guitarist instead of having to urge him to look ...

One of the clear signs of progress in this goofy modern world of ours is the slow, all-consuming standardization of USB power. Edison’s revenge, if you will. Anyhow, the Ripcord is a Kickstarter for a ...

If you’re looking for a neat DIY project this weekend, then this DIY 9V Battery USB charger could be a fun gadget to create. With only a few components, including a 9V battery, a female USB port from ...