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Power Supplies

The performance of your computer relates to its supply of power. Learn how PC power supplies and computer batteries work.

What causes laptop batteries to overheat?

Dell, Apple and the U.S. Consumer Product Safety Commission announced that several lithium-ion laptop batteries could short-circuit, causing an explosion or a fire. Find out why.

Keeping your computer cool is important to its well-being and longevity. Learn more about the 6 easy ways to keep your computer cool without using electricity. See more »

How to keep your Dell laptop from overheating. Visit to learn more about how to keep your Dell Laptop from over heating. See more »

Do you know how to know when your computer battery is dead? Learn how to know when your computer battery is dead in this article from HowStuffWorks. See more »

Can your laptop battery be overcharged? Visit to learn about laptop batteries being overcharged. See more »

What causes laptop batteries to overheat?

Dell and the United States Consumer Product Safety Commission recently announced that 4.1 million laptop batteries could short-circuit under the right conditions, causing an explosion or a fire. Learn how. See more »

How PC Power Supplies Work

The power supply in your PC provides all of the different voltages your computer needs to operate properly. Find out how a power supply works! See more »

How does a computers uninterruptible power supply work?

How does a computer's uninterruptible power supply (UPS) work? Does the computer always run from the battery? See more »

Why does my computer need a battery?

I have an older computer, and when I turned it on yesterday it would not boot. When I called technical support, they told me I needed a new battery. Why does a computer need a battery? Doesn't it get all of its power from the plug in the wall? See more »