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Operating on Battery Power 2-3
2.2 Charging the Battery
Place the battery pack inside the battery compartment and plug the AC
adapter into the notebook and an electrical outlet.
The adapter has three charging modes:
• Rapid mode
The system uses rapid charging when the notebook (with a battery
pack installed) is turned off and a powered AC adapter is connected to
it. In rapid mode, a fully depleted NiMH battery gets fully charged in
approximately two hours.
• Charge-in-use mode
When the notebook is in use with the AC adapter, the notebook also
charges the battery pack if one is installed. In charge-in-use mode, a
fully depleted NiMH battery gets fully charged in approximately four
and a half to six hours.
• Trickle mode
When the battery is fully charged, the adapter changes to trickle mode
to maintain the battery charge level.
The battery indicator lights up when the battery is being charged and turns
off when it is fully-charged or when the battery is not being charged.
If the notebook emits five beeps and then turns off (after the
power-on self test), it means the battery pack does not have
enough charge. Use the AC adapter instead, or recharge the
battery pack.