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3. Insert a replacement battery pack into the battery bay by following the figures
below.
Charging the battery
To charge the battery, place the battery pack inside the battery bay and plug the AC
adapter into the computer and an electrical outlet.
Charging modes
The adapter has three charging modes:
Rapid mode
The computer uses rapid charging when power is turned off and a powered AC
adapter is connected to it. In rapid mode, a fully depleted battery gets fully
charged in two to three hours.
Charge-in-use mode
When the computer is in use with the AC adapter plugged in, the computer also
charges the battery pack if installed. This mode will take longer to fully charge a
battery than rapid mode. In charge-in-use mode, a fully depleted battery gets fully
charged in approximately six to seven hours.
Trickle mode
When the battery is fully charged, the adapter changes to trickle mode to maintain
the battery charge level. This prevents the battery from draining while the
computer is in use.
Tip!
We suggest that you charge the battery pack before retiring for the day,
letting it charge overnight before traveling. This ensures a fully charged
battery for use the next day.