HP Compaq Presario,Presario 800AP Supplementary Manual page 94

Tip
If you will not be using your
Notebook for an extended
period of time, Compaq
recommends that you
unplug the electrical
cord from the outlet
and remove the battery
while your Notebook is
not in use.
Did you know...
The battery will charge
whether your Notebook is on
or off, and will continue to
charge until the battery is
fully charged or AC power
is disconnected.
A low-battery condition exists when the battery has less than
10 percent of its power remaining. This section of will show you
how to correct a low-battery condition and what to do if your
Notebook loses all battery power.
When your Notebook loses
all battery power, it begins
Hibernation, a process that cannot
be interrupted. If Hibernation
has begun, you must allow your
Notebook to finish saving your
information and shut off
automatically before trying to
correct the low-battery condition.
The availability of an AC wall outlet will determine which
solution you should use to correct a low-battery condition.
Use one of the following options:
This solution allows you to continue working without being
interrupted and simultaneously charges the drained battery.
You don't have to turn off your Notebook before connecting
the AC adapter. Your Notebook automatically switches to
AC power once you connect the AC adapter.