Compaq Armada V300 Series Reference Manual page 61

A battery pack can be recharged wherever external power is
available. These locations include the computer battery bay,
MultiBay, an optional Battery Charger, and the docking base.
Charging may be delayed if a battery pack is new, has not
been used for two weeks or more, or is much warmer or cooler
than a comfortable room temperature.
If you are charging the battery pack in the computer—
External power can be supplied to the computer through the
AC adapter, an optional docking base, or an optional
Automobile Power Adapter/Charger.
An optional Aircraft Power Adapter cannot be used to
charge a battery pack.
The battery light, shown below, turns on while the battery
pack is charging and turns off when the battery pack is
fully charged.
To increase the accuracy of all battery charge displays—
Allow a battery pack to discharge to the low-battery level
through normal use before charging it.
When you charge a battery pack, charge it fully.
Before charging a new battery pack or a battery pack that
has not been used for two weeks or more, calibrate the new
battery pack or check the calibration on the unused
battery pack.