Traveling with Your OmniBook Using Battery Power To respond to a low-battery warning The OmniBook automatically alerts you when the battery power drops to a critically low level. First you will hear a high-pitched beep. Then, if you have not taken restorative action within a short time, the system hibernates. You won’t be able to turn the computer on again until you restore power by one of the following actions: • Plug in the AC adapter (see "To connect AC power" on page 20). –or– • Replace the battery with one that is charged (see “To install the battery” on page 19). Note If you plug in the AC adapter, you can continue to work while your battery recharges. Setup Guide 53