You can mount these wireless security cams almost anywhere. After testing dozens of models, here are my favorites.

Battery specs tell one story, real-world tests tell another. See how several Android heavyweights outlast the iPhone 17 Pro ...

They recover lithium from used batteries with a purity of 99.79% and simplify solid-state batteries, promoting the safety of electric cars.

But the most prevalent fake batteries, Pecht says, are homemade creations. Counterfeiters can do this in make-shift environments because building a lithium-ion cell is fairly straightforward. With an ...