Question about IBM ThinkPad T20 2647 Notebook

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Always reverts to 1900

Battery only works when plugged in. But after starting always have to reset date

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  • Abba1 Aug 26, 2008

    My laptop is an IBM Thinkpad T20-2647-55u



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This indicates that the cmos battery is dead and needs replaced. The cmos is located under the main battery, it's in a yellow or greenish pouch with two wires leading to a connector. You'll have to remove the keyboard in order to get to the connector. Replacing the cmos will correct the time and date problem, if it doesn't fix the battery problem, you may need to go to IBM's support site and download the power management driver.

Posted on Aug 26, 2008


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