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3. Insert a replacement battery pack into the battery bay by following the f igures
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 th ree charging modes:

Rapid mode

The computer uses rapid charging when power is turned off and a powered A C
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 ad apter plugged in, the computer also
charges the battery pa ck if installed. Thi s mode will take long er to fully charge a
battery than rapid mode. In charge-in-use mode, a fully depleted battery gets fully
charged in approximately six to se ven hours.

Trickle mode

When the battery is fu lly charged, the adapte r 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 batter y pack before retiring for the day,
letting it charge overnight before traveling. Thi s ensures a fully charged
battery for use the next day.