User Manual

Batteries and Power Management
Using Battery Power
56 Reference GuideStartup Guide
Once the computer enters Hibernate mode, 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 23.
• Plug in the AC adapter. See “Step 2 – Connect AC power” on page 25.
• Install a charged secondary battery in the plug-in module bay. See “To use additional
batteries” on page 55.
• Install a charged secondary battery in the plug-in module bay.
Note
If you plug in the AC adapter, you can continue to work while your battery recharges.
To recharge the battery
CAUTION
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.
• To recharge a secondary battery, plug the AC adapter into the computer and insert the
battery into the module bay.
The main battery will recharge first, then the secondary battery will recharge.
To get the longest operating time, wait until the battery’s charge is below 50% before
recharging, then charge it fully (100%). Charging can take up to approximately 2 hours.
You can continue working while the battery charges.
A fully charged battery can operate the computer for up to approximately 4-5 hours,
depending on your computer’s model, power management settings, and level of use.
To use additional batteries
You can install a secondary battery in your computer’s plug-in module bay. See “Using
Plug-In Modules” on page 74 for information about installing plug-in modules.
For instructions on replacing the main battery, see “Step 1 – Install the battery” on
page 23.