At some point, the 3.6 V of a single lithium ion battery just won’t do, and you’ll absolutely want to stack LiIon cells in series. When you need high power, you’ve either got to increase voltage or ...

Learn how to make a simple lemon battery and use it as an emergency phone charger in this hands-on science experiment. Watch ...

We may receive a commission on purchases made from links. Electric cars may be all the rage these days, but even before we had cars entirely powered by electricity, batteries were still vital ...

Your charging habits may be killing your gadgets. After a recent column about the hidden death dates built into our devices, many Washington Post readers asked me what we can do to prolong the lives ...

Charging your car battery is usually the first job you should perform if your car won’t crank when turning the key. You can easily do it from home, so don’t worry about calling a professional. Battery ...