How do I replace the battery in my HP ProBook 640 G2 notebook?
To remove the battery: 1. Shut down the computer and disconnect all external devices and power cord. 2. Remove the service door, followed by the battery cover. 3. Loosen 6 Phillips P1 captive screws on the battery. Lift it out of the slot for removal. (Page 38)
From the official HP Probook 640 G2 Notebook PC manual, page 38
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