How to Test a Laptop Battery

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How to Tell if a Laptop Battery Is Bad....5

In order to test a laptop battery, go to Power Options within the Control Panel and look at the corresponding power meter. Find out how to use the light meter to test a laptop battery with help from a laptop repair specialist in this free video on laptop computer batteries.

Part of the Video Series: Laptop Repair & Maintenance
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Video Transcript

Hi, this is Nathan Morgan, with In this video, I'm going to explain how to test your laptop battery. There are several different ways to do this. What you'll need to do is go to your Start menu; choose Control Panel, and choose Power Options. Inside the power options there's a power meter that shows the percentage of how charged your laptop battery is. You want to charge that battery to a hundred percent, and with the laptop running you want to unplug it for ten minutes. And after ten minutes, if your battery has lost more than one percent per minute, or if it has lost more than ten percent in ten minutes your battery most likely needs to be replaced. And on some newer models a quick way to test your battery is using the light meter. You press it once and it shows how charged your battery is. If you hold down the button the lights will come on and then go back off, and if they come back on the more lights that come on the more the cells are damaged. So, on this particular battery, no lights came back on so the battery is good. If all the lights came back on the battery is bad. And that's all you need to know for testing your laptop battery. This is Nathan Morgan, with


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