Discover how to make a homemade battery capable of charging your smartphone using simple materials like copper foil, aluminum foil, and saltwater. This step-by-step DIY battery project demonstrates ...

A blast from the Elektor archives: this 1998 battery tester uses a simple LED display to reveal a battery’s true condition ...

Discover three easy and educational DIY projects you can create at home using everyday household items. Learn how to make a miniature water pump with a plastic bottle cap, a simple homopolar motor ...