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 ...

How often have you had to search endlessly for batteries when your flashlight unexpectedly died? Instructables user shahrokhani found the solution to this common dilemma by making his own powerful ...

Indian scientists have developed a low-cost electrocatalyst based on iron, manganese and N-doped carbon derived from fish gills (Fe/Mn/N-FGC) to increase the performance of a homemade rechargeable ...

A rechargeable battery made from crab shells and zinc could store wind and solar energy, and then its parts can either safely biodegrade within a matter of years or be recycled. The key is chitosan, a ...