Researchers at the University of California San Diego and CEA-Leti have developed a novel circuit ... Traditional battery ...

Instructables user [msuzuki777] had amassed quite a collection of batteries over the years, but was finding that some of his rechargeable ... because his FET-based design worked quite well.

The batteries are small but capable and made of various lithium chemistries, which means that most need support from a charging circuit before being used in any other projects. Some of the larger ...

Cellphones of the past came equipped with rechargeable nickel ... usually decide which type of battery is better suited for the the particular device design.