Compaq Armada 1700 Reference Manual page 43

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You can charge the battery pack in the computer's battery bay or
MultiBay while connected to an external power source or while
docked in the convenience base. You can also charge up to two
battery packs in the optional battery charger.
A new battery pack should be fully charged before it is
used for the first time. The battery pack will work without being
fully charged, but the battery gauge will not show an accurate
charge until the battery pack receives its first full charge.
Battery packs charge in the following sequence:
1. The primary battery in the computer battery bay
2. A second battery pack in the computer MultiBay
Battery packs are discharged in the reverse order, with the battery
pack in the MultiBay depleted first. See Chapter 2 for bay
locations.
To charge battery packs, follow these steps:
1. With battery pack(s) in the battery bay and/or MultiBay,
connect the power cord to the computer and plug it into an
electrical outlet.
2. Turn on the computer if you want to use it while the battery
packs are charging.
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