To Replace The Main Battery - HP OmniBook 4100 Reference Manual

Managing Battery Power
Optimum Charging
To get the longest battery operating time, continue charging until the OmniBook
battery is fully charged. The battery charging light stops blinking only when the
battery is actually full. You can continue working while the battery is charging.

To replace the main battery

If you have any unsaved data, it (and your current work session) will be lost when
you remove the battery unless the computer is connected to ac power or a second
battery is installed.
1. . Save your work.
2. Plug in the ac adapter.
–or–
From the Start menu, shut down the OmniBook.
3. Slide the battery bay release latch forward as far as it will go.
4. Gently pull the release latch back until the battery pops out.
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