You might think a shut down PC would use no electricity, but depending on your setup, it could still be drawing power. There are ways to prevent this, though.

Fast chargers can charge your phone or tablet in half the time thanks to a special power delivery protocol. Here's how it decides how much power to deliver.

For more than a century, scientists have relied on separate tools to measure the three core building blocks of electricity: ...

For devices like laptops or tablets, the amount of power you consume just by using your device can actually exceed how much power a slow-charging cable can provide.