Archive for the ‘Laptop Battery’ Category

How to recalibrate a laptop battery

If your notebook or netbook  unexpectedly goes into Sleep mode while you are using it but the battery charge is not low, you may need to recalibrate your battery. You should also recalibrate the battery periodically to maintain the accuracy of the battery gauge. Follow these steps to recalibrate the battery. Connect your computer to AC […]

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Recondition your laptop battery

Well, to be fair, your laptop’s batteries probably aren’t completely dead. But since Lithium Ion batteries tend to lose about 20% of their capacity each year, a typical three-year-old laptop might only get about an hour or so on a charge, which might not even get your folks through an entire meeting. Here is a […]

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Laptop unexpectedly goes into Sleep mode while you are using it

If your laptop unexpectedly goes into Sleep mode while you are using it but the battery charge is not low, you may need to recalibrate your battery. You should also recalibrate the battery periodically to maintain the accuracy of the battery gauge. Follow these steps to recalibrate the battery. Connect your computer to AC power and let […]

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No Battery is Detected

Notebook batteries are rated to last about 400 cycles, which typically means one year of standard use. However, I have seen them last longer. The precise amount of time you get out of a battery is dependent upon the usage & environmental factors. If the BIOS is not detecting the battery the problem is either […]

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How does the notebook charge the battery?

The notebook does not continue charging the battery once the battery is 100% fully charged. Once the battery is 100% fully charged, the ‘terminate charge bit’ is set, preventing the battery from charging. The battery does not clear the ‘terminate charge bit’ until after the fuel gauge falls below 94%. Once the battery fuel gauge […]

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Battery does not charge to 100%

Battery not charging to 100% could caused by the battery itself or the battery gauge chip (MAX17xx). Try a known good battery.

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Laptop will not run on battery or charge the battery

Typically ther are two MOSFETsnear the battery connector. Check them first, then work your way back toward the DC jack.

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Inside a laptop battery

Took apart a dead Dell battery just to show you how it looks like inside.  Connected this battery to the laptop and the laptop did not detect it. No light shows when pressed on the battery test button. This one was very easy to crack open. There’s very little glue keeping the case glued together. […]

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Plugged in not charging Windows 7

1.Click Start and type device in the search field, then select Device Manager . 2.Expand the Batteries category. 3.Under the Batteries category, right-click the Microsoft ACPI Compliant Control Method Battery listing, and select Uninstall . WARNING: Do not remove the Microsoft AC Adapter driver or any other ACPI compliant driver. 4.On the Device Manager taskbar, […]

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Battery Life Problems on Laptops with Windows 7

The message shows up on your laptop: “Consider replacing your battery. There is a problem with your battery, so your computer might shut down suddenly.” You upgraded your laptop from XP or Vista to Windows7. You know that the battery is good. But now you are getting this error message. What do you do? Microsoft […]

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