DIY solar power projects have always been fascinating to me. I kind of wrote the book on the subject. And since electric bikes have always been a huge part of my life, combining the two has always ...

Your next e-bike or robot vacuum might not have a lithium-ion battery. The ubiquitous batteries have problems—they’re slow to charge, wear out quickly, and sometimes lead to catastrophic fires. But ...

E-bikes are sometimes touted as a major (albeit underappreciated) tool in the fight against climate change. But just like any electric motor, the lithium batteries that power them are a problem. Their ...