From smartphones to laptops to even styluses like the Apple Pencil, many devices rely on lithium-ion batteries. These batteries have become increasingly popular in recent years due to their slim ...

We may receive a commission on purchases made from links. Over the last two decades or so, there's been a significant shift in the way that battery-powered devices are rolled out. These days, it's ...

Welcome to Tech Talk, a weekly column about the things we use and how they work. We try to keep it simple here so everyone can understand how and why the gadget in your hand does what it does. Things ...