To Respond To A Low-Battery Warning; To Recharge The Battery - HP OmniBook 500 Reference Manual

Note
CAUTION
On the battery
1. Remove the battery from the computer (see "Step 1: Install the battery" on page 21)
or from the expansion base.
2. Press the contact pad on the back of the battery. The number of lights that turn on
indicates the remaining charge (each light represents 20% of a full charge).

To respond to a low-battery warning

The computer automatically alerts you when the battery power drops to a critically low
level. If you do not restore power within a short time, the computer then goes into
Hibernate mode.
Once the computer enters Hibernate mode in this way, you won't be able to turn it on
again until you restore power by doing one of the following:
• Replace the battery with a charged one. See "Step 1: Install the battery" on page 21.
• Plug in the AC adapter.
• Install a charged secondary battery in one of the expansion base's plug-in module
bays—see "To use additional batteries," below.
If you plug in the AC adapter, you can continue to work while your battery recharges.

To recharge the battery

The AC adapter is normally warm whenever plugged into an AC outlet. The
computer is normally warm while recharging. Don't recharge the computer in a
briefcase or other confined space, or its battery could overheat.
• To recharge the main battery, plug the AC adapter into the computer, or dock the
computer and plug the AC adapter into the dock.
• To recharge a secondary battery, plug the AC adapter into the expansion base and
insert the battery.
Batteries charge in this order: main battery, secondary battery in the left module bay,
secondary battery in the right module bay.
Batteries and Power Management
Using Battery Power
Reference Guide 57