HP OmniBook 5500 Notebook PC - Manual (Page 37)

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The primary source of power for the OmniBook is its rechargeable battery. The
OmniBook provides several safeguards so that you won’t be surprised by a dead-
battery condition—the status panel shows the remaining battery charge and built-in
warnings are displayed for low-battery conditions.
To preserve your current work session, the OmniBook automatically turns off when
the battery charge gets too low—your session continues when you plug in the ac
adapter or insert a fresh battery.
Recharging and Replacing Batteries
You can use the ac adapter to recharge the battery—or to run on ac power to
preserve the battery. The OmniBook conserves power by using Advanced Power
Management (APM), software that controls battery charging and power drain.
Data on any of the drives is not affected by a low battery—unless the battery runs
down completely while writing data to the drive.
In this section you’ll learn how to
• Recharge the battery or run on ac power.
• Respond to a low-battery warning.
• Replace the battery.
• Install a second battery.
To recharge the battery or run on ac power
• Plug the power cord into the adapter, then into a grounded ac outlet.
• Insert the adapter plug into the socket on the left side of the OmniBook.
Caution
Use only an HP F1044B ac adapter (the type shipped with the
HP OmniBook 5500). Using any other adapter could damage the OmniBook
and void your warranty. Always plug it into a grounded outlet. Note that the