With just a low cost DC adapter and the circuit described here it is possible to build a low cost stabilized, uninterruptable 9V supply. On the grounds of safety and economy, a simple unstabilized 12V ...

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 ...

Pedal Juice, Sanyo's latest Eneloop rechargeable battery solution, offers musicians some relief from a gig bag full of 9V batteries. It could also help cut down annoying AC hum that some wall outlet ...

Sanyo's Eneloop charging system has been growing at a rapid pace, but obviously not quite rapid enough. The company has just unleashed its latest in the line: the Eneloop Music Booster. As you might ...

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 ...