Compaq Armada 7400 Reference Manual page 50

1. Insert the battery pack into the battery bay with the large label
on the battery pack facing up.
2. If the computer is in Suspend, press the suspend button to
resume normal operation.
When storing the computer for more than two weeks, remove
battery packs and store them separately to reduce the discharge
rate and increase battery life.
Battery packs self-discharge even when they are not being used.
The rate of self-discharge is affected by temperature. To prolong
the battery charge of a stored battery pack, store it in a cool, dry
place. High temperatures cause a battery pack to lose its charge
more quickly, thus reducing battery life.
The recommended storage temperature range is from 32°F to 86°F
(0°C to 30° C).