SAN FRANCISCO -- During an emergency, it's important to keep your cellphone handy and charged. In the event the power goes out, it's going to be even more difficult to find a place to plug back in and ...

In this comprehensive tutorial, you'll learn how to make a battery charger from scratch! Whether you're a DIY enthusiast or a curious beginner, this step-by-step guide will walk you through the entire ...

Some people fear death. Some people fear raccoons. Others fear watching their laptop battery hit single digits while editing a file that hasn’t been saved yet. A dying battery at the wrong time is ...

If you are looking to buy solar panels for your home, then you have probably come across solar batteries, which are basically large lithium battery packs. Using the same technology as electric car ...