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 ...

Sooner or later, most drivers encounter the inevitable inconvenience of a dead car battery. You don’t need to be an expert auto mechanic to know that without a running battery, your car won’t start.

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

Whether you're dealing with a dead battery on a cold morning or just trying to maintain your car during long periods of no driving, knowing how to properly charge a car battery is important. A ...

We may receive a commission on purchases made from links. Power tool batteries are expensive, but choosing the right battery system is an important step in deciding which brand of power tool you're ...