How to remove and change the CMOS for HP PROBOOK 645 G1
How do I remove and replace the CMOS battery of HP probook 645 G1 laptop
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Hi,
Here's the Maintenance and service guide for the laptop.
Go to p.103 to view the necessary pre-requiste steps and then the procedure to remove/replace the RTC battery.
Search online for 651948-001 to find suppliers of the battery that suit you best.
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how to ProBook 640 g1 battery chenge
The maintenance and service guide linked above is the same one that is used for your model. See the 1st page of the guide for the laptop model numbers covered by the guide.
So use the answer above to find out how to remove the RTC battery.
If you meant the main battery go to p.56-p.57. The spare part numbers for compatible batteries are at the top of p.56.
