Battery PackThe battery pack is the internal power source for the computer. It isrechargeable using the AC adapter.The operating time of a fully charged battery pack depends on how you areusing the computer. When your applications often access peripherals, youwill experience a shorter operating time.Charging the Battery Pack To charge the battery pack, connect the AC adapter to the computer and anelectrical outlet. The Battery Charge Indicator ( ) on the computer glowsyellow to indicate that charging is in progress. You are advised to keep thecomputer power off while the battery is being charged. When the battery isfully charged, the Battery Charge Indicator is off.It takes approximately 3 hours to fully charge the Li-Ion battery pack whenthe computer is off, and approximately 6 hours to fully charge the Li-Ionbattery pack when the computer is on.