Power 3-5

3.1.3 Charging the Battery

To charge the battery, place the battery pack inside the battery
compartment and plug the AC adapter into the notebook and an electrical
outlet. You can also purchase an optional external battery charger to
charge the battery pack (see section 4.8.3 for details).
Charging Modes
The adapter has three charging modes:
• Rapid mode
The notebook 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 approximately two hours.
• Charge-in-use mode
When the notebook is in use with the AC adapter plugged in, the
notebook 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 eight 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 notebook is in use.
We suggest that you charge the battery pack before retiring,
letting it charge overnight before traveling. This ensures a fully
charged battery for use the next day.