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How to replace the cosmos battery on a dell latitude cpx laptop

How do i get to the mother board to replace the cosmos battery do i need to remove the keyboard and if so how do i and what else to reachn the cosmos battery, thanks if you can help jim

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Replacing the CMOS battery on a laptop is by no means an easy task...

On a regular desktop computer it would only involve taking off a panel and replacing a flat button-cell battery.

A laptop, however, is a whole different beast. Please don't take any offense, but if your calling it a cosmos battery, I could venture to guess that working on a laptop is a foreign experience.

I would strongly recommend going to a local shop to have them do the work as with many laptops losing screws, forgetting what goes where and even breaking components and plastic pieces is far too easy to do.

IF YOU MUST DO IT YOURSELF!
Track down the specific CMOS battery for your model of laptop. (Do a quick google of your Dell model number and the words "replacement cmos battery") Once you find the specific part number, you'll be able to start the hunt for your specific part as laptops generally do not use button cell batterys the same way as a desktop, they are usually either soldered to the motherboard or have a specific connector.

If you're comfortable with it, you could take the laptop apart, track down the battery and find the voltage then resolder a new button-cell battery to the connectors and finally wraping it in electrical tape.

Good Luck and be careful! I'm still finding screws from my first laptop tear-down. lol

Simon.

Posted on Nov 28, 2008

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